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#41
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Surge Protector
On 9/9/2013 2:29 PM, Nate Nagel wrote:
On 09/09/2013 03:16 PM, Oren wrote: On Mon, 9 Sep 2013 13:17:35 -0400, "Ralph Mowery" wrote: I was an electrician before retiring Question: Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? Easy to verify if you have a meter or a 240V test light. Kill the 200A breaker and then check a 240V breaker's output while it is still in the "on" position, check each terminal of same breaker for 120VAC to ground, and also the two big conductors (will be 240v between both, 120V each to ground) coming in from outside for voltage - carefully; those are either disconnected by the 200A breaker or completely unfused and coming straight from the meter. If the latter they definitely deserve some respect; inadvertantly touching them can have negative consequences up to and including death. Not meaning to frighten, but the service entrance and everything associated with it deserves a healthy amount of respect and caution. I actually like the remotely mounted service disconnect as in a typical panel with the main breaker at the top of the panel, fishing cables down through a knockout in the top of the panel can still put your hands close to those big service entrance conductors which in that kind of setup are still hot even with the main breaker turned off; the only way to kill those is to pull the meter which means calling the power company and setting up an appointment... I've worked in those, but that doesn't mean I liked it and wasn't extremely cautious. Nothing like setting the nut on a Romex clamp and realizing that if you slip the wrong way, your screwdriver is going to go straight into a piece of 4/0 aluminum that has 120VAC on it and that YOU will limit the amount of current that flows. nate I've always treated and worked on all electrical panels as though they were energized, trust no one. On more than one occasion I got a tingle because Billy Bob the drunktrician switched the neutral instead of the hot wire. When I was installing and hooking up 4,160 volt transformers for the underground electrical system I helped build on an island, my superintendent borrowed an old wooden hot stick from the power plant to plug the energized cables into the transformer. When his hair stood on end and he almost wet his pants, he decided to send me after the new fiberglass hot stick at our warehouse. If you will just treat all the electrical systems you work on as though they were energized, it's good practice for when you come across one that is. Oh yea, you trust but verify that ALL the power is off if you're doing major work. O_o TDD |
#42
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Surge Protector
"Oren" wrote in message ... Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? No the box is not locked. It could be done though. But the box is like a typical outside waterproof box for outside outlets. The cover could be knocked off to get to the breaker so I think a lock is kind of useless. They are often designed so that you can put a lock on them. The reason is to lock it off so that it can not be turned on (without defeating something) while you are working on the wiring. At work it was mandentory that we put a lock on breakers and a tag with our name on it. Only the person that had his name on the tag could remove it. If that person was not at the plant, we had to contact them if possiable and even then it took a piece of paper signed by 3 differant people. Had to have that same paper even if like in one case the person had been retired several years. I know an electrician that pulled the meter to a church to do some wiring. After a while he got shocked. Seems that a power company man came by and saw the meter on the ground and plugged it back in. He should have put a note or tag on the meter to help keep that from hapning. |
#43
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Surge Protector
On 09/09/2013 05:13 PM, Ralph Mowery wrote:
"Oren" wrote in message ... Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? No the box is not locked. It could be done though. But the box is like a typical outside waterproof box for outside outlets. The cover could be knocked off to get to the breaker so I think a lock is kind of useless. They are often designed so that you can put a lock on them. The reason is to lock it off so that it can not be turned on (without defeating something) while you are working on the wiring. And it cannot be manually turned OFF by a miscreant who's planning on breaking in and wants to cut the power so your cordless phones etc. don't work. If you have cordless phones (and no cell, or live in an area with poor cell service) it's good to make sure that you have at least one that is corded and/or plugged into a UPS. Taking a look at where all your utilities run into the house and making sure that a simple pair of sidecutters can't leave you without communications is prudent IMHO. No, I've never had a situation like that, but it is good to think ahead. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#44
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Surge Protector
On Monday, September 9, 2013 4:33:40 PM UTC-4, Oren wrote:
On Mon, 09 Sep 2013 15:29:42 -0400, Nate Nagel wrote: On 09/09/2013 03:16 PM, Oren wrote: On Mon, 9 Sep 2013 13:17:35 -0400, "Ralph Mowery" wrote: I was an electrician before retiring Question: Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? No the box is not locked. It could be done though. But the box is like a typical outside waterproof box for outside outlets. The cover could be knocked off to get to the breaker so I think a lock is kind of useless. A lock could keep some kids or other casual trouble maker from screwing around and turning it off. Which would be real bad if you were away in winter for a week. Easy to verify if you have a meter or a 240V test light. Kill the 200A breaker and then check a 240V breaker's output while it is still in the "on" position, check each terminal of same breaker for 120VAC to ground, and also the two big conductors (will be 240v between both, 120V each to ground) coming in from outside for voltage - carefully; those are either disconnected by the 200A breaker or completely unfused and coming straight from the meter. If the latter they definitely deserve some respect; inadvertantly touching them can have negative consequences up to and including death. Not meaning to frighten, but the service entrance and everything associated with it deserves a healthy amount of respect and caution. One thing I was taught as a young teen was that when working in a breaker panel was to keep "one hand in your pocket". Not very practical though. And probably not going to do a whole lot of good if you're standing on a typical basement concrete floor. Electricity does frighten me because I 'can't see it'. I actually like the remotely mounted service disconnect as in a typical panel with the main breaker at the top of the panel, fishing cables down through a knockout in the top of the panel can still put your hands close to those big service entrance conductors which in that kind of setup are still hot even with the main breaker turned off; the only way to kill those is to pull the meter which means calling the power company and setting up an appointment... I've worked in those, but that doesn't mean I liked it and wasn't extremely cautious. Nothing like setting the nut on a Romex clamp and realizing that if you slip the wrong way, your screwdriver is going to go straight into a piece of 4/0 aluminum that has 120VAC on it and that YOU will limit the amount of current that flows. nate I'll proceed with caution -- trust me. I've put in a double breaker for a spa before and I sure was nervous about it with no main disconnect or pulling the meter. The panel didn't have a main breaker? Usually you have a main breaker at the top and it's very obvious where the incoming service wires connect to that breaker. Open it and everything below it isn't energized. You just have to watch out for where the service wires connect to the main breaker terminals. I've seen some newer panels where that area has it's own separate cover/shield so that you can't touch anything before the main without taking off that separate piece. |
#45
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Surge Protector
On Mon, 09 Sep 2013 15:29:42 -0400, Nate Nagel
wrote: On 09/09/2013 03:16 PM, Oren wrote: On Mon, 9 Sep 2013 13:17:35 -0400, "Ralph Mowery" wrote: I was an electrician before retiring Question: Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? Mine never have been. Easy to verify if you have a meter or a 240V test light. Kill the 200A breaker and then check a 240V breaker's output while it is still in the "on" position, check each terminal of same breaker for 120VAC to ground, and also the two big conductors (will be 240v between both, 120V each to ground) coming in from outside for voltage - carefully; those are either disconnected by the 200A breaker or completely unfused and coming straight from the meter. If the latter they definitely deserve some respect; inadvertantly touching them can have negative consequences up to and including death. Not meaning to frighten, but the service entrance and everything associated with it deserves a healthy amount of respect and caution. Just flip the switch and see if the lights still work. ;-) I actually like the remotely mounted service disconnect as in a typical panel with the main breaker at the top of the panel, fishing cables down through a knockout in the top of the panel can still put your hands close to those big service entrance conductors which in that kind of setup are still hot even with the main breaker turned off; the only way to kill those is to pull the meter which means calling the power company and setting up an appointment... I've worked in those, but that doesn't mean I liked it and wasn't extremely cautious. Nothing like setting the nut on a Romex clamp and realizing that if you slip the wrong way, your screwdriver is going to go straight into a piece of 4/0 aluminum that has 120VAC on it and that YOU will limit the amount of current that flows. Yeah, when I've had to do it, I've been able to wire in from the bottom of the panel. |
#46
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Surge Protector
On Mon, 09 Sep 2013 13:33:40 -0700, Oren wrote:
One thing I was taught as a young teen was that when working in a breaker panel was to keep "one hand in your pocket". Electricity does frighten me because I 'can't see it'. When you can see it, it's too late. ;-) |
#47
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Surge Protector
On 9/9/2013 4:22 PM, Nate Nagel wrote:
On 09/09/2013 05:13 PM, Ralph Mowery wrote: "Oren" wrote in message ... Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? No the box is not locked. It could be done though. But the box is like a typical outside waterproof box for outside outlets. The cover could be knocked off to get to the breaker so I think a lock is kind of useless. They are often designed so that you can put a lock on them. The reason is to lock it off so that it can not be turned on (without defeating something) while you are working on the wiring. And it cannot be manually turned OFF by a miscreant who's planning on breaking in and wants to cut the power so your cordless phones etc. don't work. If you have cordless phones (and no cell, or live in an area with poor cell service) it's good to make sure that you have at least one that is corded and/or plugged into a UPS. Taking a look at where all your utilities run into the house and making sure that a simple pair of sidecutters can't leave you without communications is prudent IMHO. No, I've never had a situation like that, but it is good to think ahead. nate Cell system communication modems are a lot less expensive than they used to be as a backup if the land line is cut. The are also alarm companies that have proprietary radio links working on the two way radio bands. I'm not sure of the cost of the cell system modems but I've been installing wireless links in retail stores that allow the credit card systems to operate if the T1 or internet connection goes down. It used to be dial-up modems for the CC machines if the T1 failed but technology marches on. I use VoIP and cellular for my phones and am looking for a good VoIP provider that will allow the business to operate the same way it does now with ringmaster for the three phone numbers in the office which includes a fax machine. Roommate needs remote call forwarding for the business phone while leaving the house phone and fax machine working as they do now. ^_^ TDD |
#48
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Surge Protector
On Monday, September 9, 2013 4:33:40 PM UTC-4, Oren wrote:
One thing I was taught as a young teen was that when working in a breaker panel was to keep "one hand in your pocket". Electricity does frighten me because I 'can't see it'. The 'one hand in a pocket' rule is good especially when working in tight spaces. I also use construction type gloves or playtex gloves if 'too many items' might result in a mistake. Of course sharp wires can still penetrate those gloves. A footnote necessary here because so many want to argue. My preference is for cotton construction gloves that have plastic dots on the finger tips. So that even an inadvertent 'back of the hand' touch does not result in a shock. |
#49
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Surge Protector
On Mon, 9 Sep 2013 20:59:07 -0700 (PDT), westom
wrote: On Monday, September 9, 2013 4:33:40 PM UTC-4, Oren wrote: One thing I was taught as a young teen was that when working in a breaker panel was to keep "one hand in your pocket". Electricity does frighten me because I 'can't see it'. The 'one hand in a pocket' rule is good especially when working in tight spaces. Jesus, Jose' and Maria. We finally agree. |
#50
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Surge Protector
On 9/9/2013 11:17 PM, Oren wrote:
On Mon, 9 Sep 2013 20:59:07 -0700 (PDT), westom wrote: On Monday, September 9, 2013 4:33:40 PM UTC-4, Oren wrote: One thing I was taught as a young teen was that when working in a breaker panel was to keep "one hand in your pocket". Electricity does frighten me because I 'can't see it'. The 'one hand in a pocket' rule is good especially when working in tight spaces. Jesus, Jose' and Maria. We finally agree. When I worked out on construction sites in hot weather, I had to make very sure my shirt tails were tucked in because I sweat like a thunderstorm. On more than one occasion I got a tingle because my sweat dampened shirt touched a ground. You could always tell where I'd been working due to the puddle of sweat on the floor. I was very careful when working on high voltage in a soaking wet condition. I kept a dry towel around not for my face but to dry the hot stick used to manipulate the plugs and switches. O_o TDD |
#51
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Surge Protector
On 9/9/2013 10:04 AM, westom wrote:
Those public documents says something different from what others post here. Do you trust the IEEE Guide? Or what others have misrepresented? Anyone can read the surge guides (except westom) and find out who is right. Simple questions that westom never answers: - Why do the only 2 examples of protection in the IEEE guide use plug-in protectors? - Why does the NIST guide says plug-in protectors are "the easiest solution"? - Why does the NIST guide say "One effective solution is to have the consumer install" a multiport plug-in protector? - How would a service panel protector provide any protection in the IEEE example, page 33? - Why does the IEEE guide say for distant service points "the only effective way of protecting the equipment is to use a multiport [plug-in] protector"? - Why did Martzloff say in his paper "One solution. illustrated in this paper, is the insertion of a properly designed [multiport plug-in surge protector]"? - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? For real science read the ~IEEE and NIST surge guides. Excellent information on surge protection. And both say plug-in protectors are effective. |
#52
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Surge Protector
On 9/9/2013 1:16 PM, Oren wrote:
Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? The preferred 'whole house' location is where the earthing electrode(s) connect to the power system. That should be at the service disconnect, which is the 200A breaker. But there is not an easy way to connect a surge protector there. This may be a time where a surge protector from the utility company is preferred. They mount between the meter and the socket, which should be adjacent to the disconnect. Your utility may not have them, and if they do there is likely a month charge. At a "service panel" the neutral and ground are connected together. The circuit breaker panel inside your house should be a "subpanel". There should be separate neutral and ground bars. A surge protector then needs 4 wires - hot, hot, neutral, ground. (A service panel only has 3 - hot, hot, neutral/ground.). Entry protectors for cable and phone (if any) connect to the earthing system, which is connected to the 200A disconnect. With a strong surge the voltage drop on the neutral and ground wires from the subpanel to the outside disconnect are added to the voltage between power and cable/phone wires. This can be significant - it is something like the voltage in the IEEE surge guide, page 22, "Lead Length" (actually less because the wires are bigger, but not a lot less). Devices connected only to power are protected, but if there is also a connection to cable/phone/?dish the device may be vulnerable. This is where the IEEE guide example westom misrepresents says "the only effective way of protecting the equipment is to use a multiport [plug-in] protector". |
#53
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Surge Protector
On Mon, 09 Sep 2013 12:16:23 -0700, Oren wrote:
On Mon, 9 Sep 2013 13:17:35 -0400, "Ralph Mowery" wrote: I was an electrician before retiring Question: Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? Thanks everyone for the replies and excellent advice and warnings. My 200 Amp breaker - main disconnect at the meter; resembles this photo, except the breaker is lower down one the meter box. http://handymanhowto.com/wp-content/uploads/2011/04/DSC03966.jpg My plan is to use a SPD breaker in breaker panel in the garage. Dufas pointed me in the correct direction for the Homelite brand. I'll also add a lock at the meter breaker since it could easily be turned off by the miscreants and stink-eyes. Thanks again. |
#54
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Surge Protector
On Tue, 10 Sep 2013 08:20:44 -0600, bud--
wrote: - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? chuckle I recall fuel trucks dragging chains for "earthling". |
#55
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Surge Protector
"Oren" wrote in message ... I'll also add a lock at the meter breaker since it could easily be turned off by the miscreants and stink-eyes. You might want to check with someone up on the code before you put a lock to lock on the breaker/disconnect that is outside the house. I am thinking it was put on so the fire department could disconnect the house from the power lines if it caught on fire. Could be wrong on that. I dealt mostly in industry but for us, we could not lock a breaker/disconnect on except maybe in rare cases. |
#56
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Surge Protector
"Oren" wrote in message ... On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? chuckle I recall fuel trucks dragging chains for "earthling". That was to get rid of static electricity. In hospital operating rooms the floor is made out of a material that will conduct electricity to a small ammout. The chairs and other things have special conductive rubber wheels and tips. Some of the items also have drag chains. All this is to cut down the chance of a static electricity spark. Some of the gases used to put people to sleep is highly explosive, especially when mixed with the high concentration of oxygen often used. |
#57
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Surge Protector
On Mon, 09 Sep 2013 20:30:28 -0500, The Daring Dufas
wrote: On 9/9/2013 4:22 PM, Nate Nagel wrote: On 09/09/2013 05:13 PM, Ralph Mowery wrote: "Oren" wrote in message ... Most likely yes. 200A is a typical value for a modern house's service, and "just under the meter" makes sense. I'm assuming that the box in which it is contained is locked however? No the box is not locked. It could be done though. But the box is like a typical outside waterproof box for outside outlets. The cover could be knocked off to get to the breaker so I think a lock is kind of useless. They are often designed so that you can put a lock on them. The reason is to lock it off so that it can not be turned on (without defeating something) while you are working on the wiring. And it cannot be manually turned OFF by a miscreant who's planning on breaking in and wants to cut the power so your cordless phones etc. don't work. If you have cordless phones (and no cell, or live in an area with poor cell service) it's good to make sure that you have at least one that is corded and/or plugged into a UPS. Taking a look at where all your utilities run into the house and making sure that a simple pair of sidecutters can't leave you without communications is prudent IMHO. No, I've never had a situation like that, but it is good to think ahead. nate Cell system communication modems are a lot less expensive than they used to be as a backup if the land line is cut. The are also alarm companies that have proprietary radio links working on the two way radio bands. I'm not sure of the cost of the cell system modems but I've been installing wireless links in retail stores that allow the credit card systems to operate if the T1 or internet connection goes down. It used to be dial-up modems for the CC machines if the T1 failed but technology marches on. I use VoIP and cellular for my phones and am looking for a good VoIP provider that will allow the business to operate the same way it does now with ringmaster for the three phone numbers in the office which includes a fax machine. Roommate needs remote call forwarding for the business phone while leaving the house phone and fax machine working as they do now. ^_^ When I looked into it, cell based alarm systems were about $20/mo more than landline or Internet connected systems. The cell companies don't give away even the smallest bandwidth (SMS, for example). |
#58
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Surge Protector
On 9/10/2013 1:08 PM, Ralph Mowery wrote:
"Oren" wrote in message ... I'll also add a lock at the meter breaker since it could easily be turned off by the miscreants and stink-eyes. You might want to check with someone up on the code before you put a lock to lock on the breaker/disconnect that is outside the house. I am thinking it was put on so the fire department could disconnect the house from the power lines if it caught on fire. Could be wrong on that. I dealt mostly in industry but for us, we could not lock a breaker/disconnect on except maybe in rare cases. He could always put a safety lock, the type used by some utilities so firemen can whack it with a fire ax and it breaks off. Of course, the firemen have been known to knock the meter right out of the housing with a fire ax when a house is on fire. ^_^ http://www.qrfs.com/BreakableLockwithKey TDD |
#59
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Surge Protector
On Tue, 10 Sep 2013 14:08:54 -0400, "Ralph Mowery"
wrote: You might want to check with someone up on the code before you put a lock to lock on the breaker/disconnect that is outside the house. I am thinking it was put on so the fire department could disconnect the house from the power lines if it caught on fire. Could be wrong on that. That would make sense, but the disconnect breaker cover could easily be knocked off by the FD as it is a stand-off type waterproof box. It is not recessed in the meter panel. The breaker is recessed, though. Thanks. |
#60
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Surge Protector
On 9/10/2013 1:01 PM, Oren wrote:
On Mon, 09 Sep 2013 12:16:23 -0700, Oren wrote: On Mon, 9 Sep 2013 13:17:35 -0400, "Ralph Mowery" wrote: I was an electrician before retiring Question: Outside, just under my meter is a single 200 Amp breaker saying "service disconnect". Will turning off the breaker kill the power inside my electrical panel? Meaning; the panel is not hot and "SAFER" to work when I add a whole house breaker surge protector? Thanks everyone for the replies and excellent advice and warnings. My 200 Amp breaker - main disconnect at the meter; resembles this photo, except the breaker is lower down one the meter box. http://handymanhowto.com/wp-content/uploads/2011/04/DSC03966.jpg My plan is to use a SPD breaker in breaker panel in the garage. Dufas pointed me in the correct direction for the Homelite brand. I'll also add a lock at the meter breaker since it could easily be turned off by the miscreants and stink-eyes. Thanks again. I haven't seen a meter box like that around here but at one time the whole breaker panel with the meter in the top was very common sometimes containing only the heavy load breakers with a separate lighting panel on the inside. It's what's in the older home I reside in now but I haven't seen that type of setup used on newer homes except there may be a 200 amp breaker in a separate box under the meter box. ^_^ TDD |
#61
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Surge Protector
On 9/10/13 1:07 PM, Oren wrote:
On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? chuckle I recall fuel trucks dragging chains for "earthling". Farmers used to have a drag chain on their combines long ago to dissipate static electricity. It doesn't take long to ruin an expensive piece of equipment that is surrounded by combustible material. Hot bearings are probably a more frequent cause of combine fires. |
#62
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Surge Protector
The Daring Dufas posted for all of us...
And I know how to SNIP He could always put a safety lock, the type used by some utilities so firemen can whack it with a fire ax and it breaks off. Of course, the firemen have been known to knock the meter right out of the housing with a fire ax when a house is on fire. ^_^ http://www.qrfs.com/BreakableLockwithKey TDD WE had a couple of our guys suffer from arc blast when they pulled the meter at a convenience store fire. This was 30 years ago. -- Tekkie |
#63
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Surge Protector
On 9/10/2013 9:10 PM, Tekkie® wrote:
The Daring Dufas posted for all of us... And I know how to SNIP He could always put a safety lock, the type used by some utilities so firemen can whack it with a fire ax and it breaks off. Of course, the firemen have been known to knock the meter right out of the housing with a fire ax when a house is on fire. ^_^ http://www.qrfs.com/BreakableLockwithKey TDD WE had a couple of our guys suffer from arc blast when they pulled the meter at a convenience store fire. This was 30 years ago. That's why the firefighters I know tell me they stand back and have their protective gear on when knocking a meter out the socket. o_O TDD |
#64
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Surge Protector
On Tue, 10 Sep 2013 11:07:42 -0700, Oren wrote:
On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? chuckle I recall fuel trucks dragging chains for "earthling". Hmm, what did they use to troll for Martians? |
#66
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Surge Protector
On Tuesday, September 10, 2013 2:07:42 PM UTC-4, Oren wrote:
On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? I recall fuel trucks dragging chains for "earthling". Planes were crashing due to lightning strikes. And were destroyed while on ground. Then engineers implemented simple techniques so that direct lightning strikes cause no damage. An example of why airplane grounds are essential: http://www.crh.noaa.gov/pub/ltg/plane_japan.php A ground mistake inside a Boeing 707 meant lightning destroying an in-flight passenger liner over Elkton MD. That defective ground was corrected so that direct strikes cause no damage. Same concepts are why a ‘whole house’ protector does best protection for all household appliances. Obviously the topic was not about airplanes. Aerospace grounding is more complex. But uses similar techniques. Relevant is a different surge that comes from many sources including lightning. When did AC grid switching bring down an airliner? Only a sales promoter would confuse appliance protection with airborne airplanes. Grounded airplanes are directly struck by lightning without damage - because by using similar single point earth ground concepts. Even airplanes have no damage when lighting is only "intercepted or diverted to a path which will, if well designed and constructed, not result in damage." Same technique means direct lightning strikes without damage to any appliance. Page 33 figure 8 shows damage because a surge current was permitted (all but invited) inside. Destructive surges hunt for earth destructively via appliance - without or without a plug-in protector. Even plug-in protectors needs protection only provided by earthing BEFORE a surge can enter the building. 8000 volts does not exist destructively inside a house when a ‘whole house’ protector is properly earthed. 8000 volts destroys any nearby appliance because money was misdirected on protectors that do not even claim that protection. Even munitions dumps do not waste money on plug-in protectors. Instead they upgrade and carefully inspect what defines protection - single point earth ground. Reality does not change because many only learned from advertising and sales promoters. A protector is only as effective as its earth ground. Where is that plug-in protector specification that defines protection? He cannot provide that simple spec number … because even the manufacturer does not claim that protection. A protector is as effective as its earth ground. So that everything is protected including power strip protectors. |
#67
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Surge Protector
On Tue, 10 Sep 2013 22:10:54 -0400, Tekkie®
wrote: WE had a couple of our guys suffer from arc blast when they pulled the meter at a convenience store fire. This was 30 years ago. I had not heard of the problem before, until a few years ago, when my meter was changed by the utility company. The guy had full face shield and other personal safety equipment. He was telling me of instances where he saw it happen. |
#68
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Surge Protector
On Tue, 10 Sep 2013 22:00:10 -0500, The Daring Dufas
wrote: That's why the firefighters I know tell me they stand back and have their protective gear on when knocking a meter out the socket. o_O Arc Flash: "Journeyman electrician reaches under an electric panel to attach a phase meter. Two apprentice electricians stand in the open enclosure. The journeyman electrician assumed the enclosure was de-energized, but did not follow lock out tag out procedure. Notice the helmet stays attached during the explosion. The hair net melted into his skin. Electrical explosion in Cudahy WI in 2003." http://www.youtube.com/watch?v=iqZ47FBw1YU .... a hair net? |
#69
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Surge Protector
On Wednesday, September 11, 2013 9:31:22 AM UTC-4, westom wrote:
On Tuesday, September 10, 2013 2:07:42 PM UTC-4, Oren wrote: On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? I recall fuel trucks dragging chains for "earthling". Planes were crashing due to lightning strikes. And were destroyed while on ground. Then engineers implemented simple techniques so that direct lightning strikes cause no damage. That wasn't the question. The question was if surge protection is impossible without a short, direct connection to ground, which is what you claim, how can airplanes be surge protected? An example of why airplane grounds are essential: http://www.crh.noaa.gov/pub/ltg/plane_japan.php Thanks for now repeating back to us what we've been telling you for years. Now, the real question is, where is that direct, short connection to earth, that you say is required for any surge protection to be possible? A ground mistake inside a Boeing 707 meant lightning destroying an in-flight passenger liner over Elkton MD. That defective ground was corrected so that direct strikes cause no damage. Same concepts are why a ‘whole house’ protector does best protection for all household appliances. Obviously the topic was not about airplanes. Aerospace grounding is more complex. But uses similar techniques. How is that possible, it it's true, as you claim, that no surge protection is possible without a short, direct connection to earth ground? Relevant is a different surge that comes from many sources including lightning. When did AC grid switching bring down an airliner? Only a sales promoter would confuse appliance protection with airborne airplanes. No one claimed AC grid switching brought down an airliner. We're just asking the simple question, if there can be no protection against lightning induced surges without a direct, short connection to earth, how is it that those airplanes are very effectively protected against surges? Grounded airplanes are directly struck by lightning without damage - because by using similar single point earth ground concepts. Even airplanes have no damage when lighting is only "intercepted or diverted to a path which will, if well designed and constructed, not result in damage." Same technique means direct lightning strikes without damage to any appliance. Page 33 figure 8 shows damage because a surge current was permitted (all but invited) inside. Destructive surges hunt for earth destructively via appliance - without or without a plug-in protector. Even plug-in protectors needs protection only provided by earthing BEFORE a surge can enter the building. 8000 volts does not exist destructively inside a house when a ‘whole house’ protector is properly earthed. 8000 volts destroys any nearby appliance because money was misdirected on protectors that do not even claim that protection. The lie repeated. What page 33, fig 8 of the IEEE guide actually shows is a plug-in surge protector protecting a TV from damage by a surge. And it further states that to avoid the destructive surge to TV2, a second surge protector for it is required. "A second multi-port protector as shown in Fig. 7 is required to protect TV2." THAT is what IEEE says and what it shows. The IEEE guide is showing an example of plug-in surge protectors being used. You on the other hand continue to claim they are useless and actually cause damage. If that were the case, IEEE would just say it too and say don't bother with plug-in protectors, they are useless, instead of showing one protecting TV1 and saying that an additional one would protect TV2. Anyone can look at the simple drawing, read a paragraph or two, and decide who is lying. http://www.lightningsafety.com/nlsi_lhm/IEEE_Guide.pdf Page 32 of the document. Even munitions dumps do not waste money on plug-in protectors. Instead they upgrade and carefully inspect what defines protection - single point earth ground. Reality does not change because many only learned from advertising and sales promoters. A protector is only as effective as its earth ground. So, again, how is it that those airplanes are surge protected? |
#70
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Surge Protector
On Wed, 11 Sep 2013 14:10:21 -0700 (PDT), "
wrote: So, again, how is it that those airplanes are surge protected? I'd like to see ALL the answers that bub has asked him, above. Stepping in horse **** won't make one a cowboy. |
#71
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Surge Protector
" wrote:
On Wednesday, September 11, 2013 9:31:22 AM UTC-4, westom wrote: On Tuesday, September 10, 2013 2:07:42 PM UTC-4, Oren wrote: On Tue, 10 Sep 2013 08:20:44 -0600, bud-- wrote: Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? I recall fuel trucks dragging chains for "earthling". Planes were crashing due to lightning strikes. And were destroyed while on ground. Then engineers implementged simple techniques so that direct lightning strikes cause no damage. That wasn't the question. The question was if surge protection is impossible without a short, direct connection to ground, which is what you claim, how can airplanes be surge protected? A short ground at the box may prevent end point differential voltage spike. If the strike is large enough, there will possibly be still enough remote voltage to damage. End point protection provides elimination of differential spike, but makes it common mode. If a device still sees a very high common mode voltage, it could still have damage if there is enough capacitance to another ground point. In the case of a plane, huge currents in the aluminum could still cause internal problems caused by induced currents. Greg |
#72
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Surge Protector
On Wednesday, September 11, 2013 5:59:08 PM UTC-4, Oren wrote:
On Wed, 11 Sep 2013 14:10:21 -0700 (PDT), " So, again, how is it that those airplanes are surge protected? I'd like to see ALL the answers that bub has asked him, above. Obviously terrestrial protection is irrelevant to airborne protection. Aerospace protection is significantly more complex. It must protect when an airplane is grounded like a house. It must protect when the incoming and outgoing path to earth can be any two locations (as in that picture). And it must protect during direct "cloud to cloud" lightning strikes. Totally irrelevant to the topic. Educated posters would understand that. Obviously airplane protection was irrelevant to this topic. Cheapshot artists must create confusion. So that damning questions (that demand numbers) can be ignored. If honest, then they said where hundreds of thousands of joules harmlessly dissipate. Then severe limitations of plug-in protectors become obvious. Then obvious is why plug-in protectors must be implemented with a properly earthed 'whole house' protector. Every IEEE and other professional sources always cite one always required system component: single point earth ground. Where is a power strip numeric spec that claims protection from each type of surge? Even a promoter of these products cannot provide spec numbers for one simple reason. A power strip protector does not claim to protect from that typically destructive type of surge. It only claims to protect from tinier transients; often made irrelevant by protection already inside appliances. Why so many cheapshot accusations without any honest technical numbers? Same reason why they want to talk about airplanes when the discussion obviously is about terrestrial protection. If not posting denigration, then ask technical questions one post at a time. A respectful question from someone with a basic grasp of science gets answered. Many of his questions are intentionally childish and vilifying. Ignoring his silly accusations is his best answer. Because no adult need be that ignorant. Should you want to learn, then ask his questions without mockery and ridicule. |
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Surge Protector
On Wednesday, September 11, 2013 11:18:02 PM UTC-4, westom wrote:
On Wednesday, September 11, 2013 5:59:08 PM UTC-4, Oren wrote: On Wed, 11 Sep 2013 14:10:21 -0700 (PDT), " So, again, how is it that those airplanes are surge protected? I'd like to see ALL the answers that bub has asked him, above. Obviously terrestrial protection is irrelevant to airborne protection. Aerospace protection is significantly more complex. It must protect when an airplane is grounded like a house. It must protect when the incoming and outgoing path to earth can be any two locations (as in that picture). And it must protect during direct "cloud to cloud" lightning strikes. Totally irrelevant to the topic. Educated posters would understand that. It's not irrelevant because some of the same principles that are used in plug-in surge protectors deployed in a house apply: tiered protection clamping Obviously airplane protection was irrelevant to this topic. Cheapshot artists must create confusion. So that damning questions (that demand numbers) can be ignored. Confusion? You take a diagram from the IEEE guide that shows how a plug-in surge protector is used to protect a TV and try to claim it shows they cause damage, because the second TV, with no surge protector, gets damaged. Despite the fact that the IEEE guide says: "A second multi-port protector as shown in Fig. 7 is required to protect TV2." If honest, then they said where hundreds of thousands of joules harmlessly dissipate. As Bud and everyone else has tried to explain to you, an AC surge inside a house is not hundreds of thousands of joules. Then severe limitations of plug-in protectors become obvious. Then obvious is why plug-in protectors must be implemented with a properly earthed 'whole house' protector. Every IEEE and other professional sources always cite one always required system component: single point earth ground. Where is a power strip numeric spec that claims protection from each type of surge? Even a promoter of these products cannot provide spec numbers for one simple reason. A power strip protector does not claim to protect from that typically destructive type of surge. It only claims to protect from tinier transients; often made irrelevant by protection already inside appliances. Here's an example that took about 30 secs to find: http://www.newegg.com/Product/Produc...FS1p7Aod7mgAGA Model BrandBELKINSeriesHome/OfficeModelBE106000-04 Specification Outlets6 Cord Length4 ft. Output Amperage Capacity15 Output Watt Capacity1875W AC Suppression Joule Rating720 JouleEMI/RFI Noise Filter150K Hz - 100M Hz, up to 43dB Clamping Voltage330 VoltsProtection ModesH-N, N-G and H-G Features720 Joule energy rating provides maximum protection of all your sensitive electronic devices 6 Surge-protected outlets supply complete, 3-line AC protection 4-foot power cord delivers optimal, safe AC power through a 14-gauge heavy-duty cord Filters EMI/RFI noise up to 43 dB reduction Maximum Spike Amperage of 48,000 Amps Not hard to find. BTW, still waiting for the answer to the question of how surge protection is possible inside an appliance, which you acknowledge exists is possible, since said appliance has no short, direct connection to earth ground...... Why so many cheapshot accusations without any honest technical numbers? Same reason why they want to talk about airplanes when the discussion obviously is about terrestrial protection. We've supplied references from IEEE and NIST. That's about as honest as it gets. Your references are pretty much your flapping gums. If not posting denigration, then ask technical questions one post at a time. A respectful question from someone with a basic grasp of science gets answered. Many of his questions are intentionally childish and vilifying.. Ignoring his silly accusations is his best answer. Because no adult need be that ignorant. Should you want to learn, then ask his questions without mockery and ridicule. Oh please. Those simple questions have been asked of you for years: Why do the only 2 examples of protection in the IEEE guide use plug-in protectors? - Why does the NIST guide says plug-in protectors are "the easiest solution"? - Why does the NIST guide say "One effective solution is to have the consumer install" a multiport plug-in protector? - How would a service panel protector provide any protection in the IEEE example, page 33? - Why does the IEEE guide say for distant service points "the only effective way of protecting the equipment is to use a multiport [plug-in] protector"? - Why did Martzloff say in his paper "One solution. illustrated in this paper, is the insertion of a properly designed [multiport plug-in surge protector]"? - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? There never is an answer, because the answers would show you're wrong. It's impossible to explain how the IEEE talks about using plug-ins and shows diagrams where they are used, and at the same time claim that it's consistent with your claims that they are worthless, ineffective, cause damage, etc. So, after getting beat up here time after time, you feel ridiculed. I've yet to see anyone agree with you. Sorry, but that's how it works. |
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Surge Protector
On Thursday, September 12, 2013 8:00:52 AM UTC-4, wrote:
It's not irrelevant because some of the same principles that are used in plug-in surge protectors deployed in a house apply: A 200 watt transmitter is connected to a long wire antenna. Touch one part of that antenna to feel no voltage. Touch another part to be shocked by maybe over 100 volts. How are two completely different voltages on the same wire? Because electrical concepts, unknown to you, also apply to surge protection. You posted a Belkin spec that only says one thing about surge protection. Its 720 (near zero) joules will magically absorb surges that are hundreds of thousands of joules. A 720 joules surge is irrelevant due to protection already inside appliances. Surges are that small (less than 720 joules) or smaller when proper earthing and a 'whole house' protector is implemented. You could not even identify which Belkin spec defines protection. So you posted the entire spec hoping something defines protection from all types of surges. GZ discussed different types. Insufficient knowledge explains why you have no idea what he posted. And why most of your posted specs say nothing about each type of surge. Fewer and informed posters even have contradicted you. They said so in a way you would not understand. So you would not also attack them with phony accusations. Defined were numerous reasons why all appliances have internal protection. It was too complex for you. Let's make it real simple. One reason why electronics have superior protection: galvanic isolation. You have a bad habit of reading only what you want to hear. I did not say galvanic isolation is the entire protection. It is but one example of superior protection required and found in appliances. And then something you never post. Numbers. 120 volt electronics even 40 years ago could withstand 600 volt spikes without damage. Hundreds of thousands of joules can enter a building (go hunting destructively for earth via appliances) IF energy is not earthed BEFORE entering. Every IEEE and other professional citations requires a low impedance (ie 'less than 10 foot') connection to earth to have protection. For example the Red Book Standard 141: In actual practice, lightning protection is achieve by the process of interception of lightning produced surges, diverting them to ground, and by altering their associated wave shapes. From IEEE's Emerald Book: It is important to ensure that low-impedance grounding and bonding connections exist among the telephone and data equipment, the ac power system's electrical safety-grounding system, and the building grounding electrode system. ... Failure to observe any part of this grounding requirement may result in hazardous potential being developed between the telephone (data) equipment and other grounded items From Southwest Bell on surge protection: Surge protection takes on many forms, but always involves the following components: Grounding bonding and surge protectors. ... Grounding is required to provide the surge protector with a path to dump the excess energy to earth. A proper ground system is a mandatory requirement of surge protection. Without a proper ground, a surge protector has no way to disburse the excess energy and will fail to protect downstream equipment. Bonding is required to electrically connect together the various grounds of the services entering the premises. Without bonding, a surge may still enter a premise after firing over a surge protector, which will attempt to pass the excess energy to its ground with any additional energy that the services surge protector ground cannot instantly handle, traveling into and through protected equipment, damaging that equipment in the process. ... Now, if all the various service entrance grounds are bonded together there are no additional paths to ground through the premise. Even if all of the grounds cannot instantly absorb the energy, the lack of additional paths to ground through the premise prevents the excess energy from seeking out any additional grounds through that premise and the electronic equipment within. As such, the excess energy remains in the ground system until dissipated, sparing the protected equipment from damage. ... By far, the whole house hardwired surge protectors provide the best protection. When a whole house primary surge protector is installed at the service entrance, it will provide a solid first line of defense against surges which enter from the power company's service entrance feed. These types of protectors can absorb/pass considerably more energy than any other type of protector, and if one does catastrophically fail, it will not typically be in a living space. ... Plug in strip protectors are, at best, a compromise. At worst, they may cause more damage than they prevent. While they may do an acceptable job of handling hot to neutral surges, they do a poor job of handling any surge that must be passed to ground. You had ignorance of two separate voltages on the same wire. You selectively misquote to protect myths taught by advertising. In some cases, you have no idea what that expert (ie Martzloff) was really saying. In part because you routinely ignore all numbers. You even confused an in-flight airliner with terrestrial protection. You quote a Belkin spec that makes no claims of protection from each type of surge. Due to ignorance, you quote then entire spec hoping something defines protection. Why post specs that do not claim to protect from typically destructive surges? Relevant concepts even in GZ's post and confirmed by Southwest Bell completely escape you - due to an education from advertising. To remain deceived, you even ignored what Martzloff says about plug-in (point of connection) protectors: Conclusion: 1) Quantitative measurements in the Upside-Down house clearly show objectionable difference in reference voltages. These occur even when or perhaps because, surge protective devices are present at the point of connection of appliances. Your accusations are provided by a sales promoter who has spend almost ten years following me as my personal troll. He is paid to promote myths and half truths. What is your excuse for denying basic electrical concepts? You did not even know that zero volts and over 100 volts could exist on the same wire. If the naive are in denial, then that proves protectors with no earth connection will magically make hundreds of thousands of joules disappear? Oh. bud says its not hundreds of thousands of joules. You know the sales promoter, who never did any of this, must be right? All IEEE Standards must be wrong - your reasoning. So how does near zero joules in that Belkin magically make hundreds of thousands of joules just magically disappear. Simple. You deny those hundreds of thousands of joules even exist. And then create confusing by discussing in-flight aircraft. To mask what is, at best, an electrician's knowledge of electricity. |
#75
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Surge Protector
On Friday, September 13, 2013 9:20:36 AM UTC-4, westom wrote:
On Thursday, September 12, 2013 8:00:52 AM UTC-4, wrote: It's not irrelevant because some of the same principles that are used in plug-in surge protectors deployed in a house apply: A 200 watt transmitter is connected to a long wire antenna. Touch one part of that antenna to feel no voltage. Touch another part to be shocked by maybe over 100 volts. How are two completely different voltages on the same wire? Because electrical concepts, unknown to you, also apply to surge protection. Yawn, just more re-direction. Except perhaps that if you're in the practice of grabbing on to energized antennas, well, that might explain you condition. You posted a Belkin spec that only says one thing about surge protection. Its 720 (near zero) joules will magically absorb surges that are hundreds of thousands of joules. It says no such thing. And again, as Bud stated with references, surges at an appliance inside a house are *not* any where near hundreds of thousands of joules. A 720 joules surge is irrelevant due to protection already inside appliances. Surges are that small (less than 720 joules) or smaller when proper earthing and a 'whole house' protector is implemented. And your cite for that would be? You could not even identify which Belkin spec defines protection. So you posted the entire spec hoping something defines protection from all types of surges. GZ discussed different types. Insufficient knowledge explains why you have no idea what he posted. And why most of your posted specs say nothing about each type of surge. Fewer and informed posters even have contradicted you. They said so in a way you would not understand. So you would not also attack them with phony accusations. Tou asked for a reference, I supplied one. That is something you are incapable of doing. The specs listed there are no different than the specs you'd find in the typical whole house surge protector, which you accept. Defined were numerous reasons why all appliances have internal protection. We must have missed that. And also the part about how they could even have surge protection, when you keep honking on about how no protection is possible without a direct, short connection to earth ground. It was too complex for you. Let's make it real simple. One reason why electronics have superior protection: galvanic isolation. Good grief! The MOV inside an oven, dishwasher, or TV is there to protect against galvanic corrosion? You have a bad habit of reading only what you want to hear. Unlike you, who takes the IEEE guide showing the usage of plug-in surge protectors and tries to lie that it says something else? Good grief! I did not say galvanic isolation is the entire protection. Yawn... This post you just made is the first I've heard of galvanic anything in this thread. You have me confused with sone other heated debate in another forum? Or did you just forget to take your medications? It is but one example of superior protection required and found in appliances. And then something you never post. Numbers. 120 volt electronics even 40 years ago could withstand 600 volt spikes without damage. Still waiting for an answer. How is that protection inside an appliance possible when you claim that for any protection at all a direct, short connection to earth ground is necessary? That is just one of the many questions we've been asking for years, with no answer.... Hundreds of thousands of joules can enter a building (go hunting destructively for earth via appliances) BS. That amount of energy would cause arcing and flash over long before it got to any appliances. IF energy is not earthed BEFORE entering. Every IEEE and other professional citations requires a low impedance (ie 'less than 10 foot') connection to earth to have protection. For example the Red Book Standard 141: In actual practice, lightning protection is achieve by the process of interception of lightning produced surges, diverting them to ground, and by altering their associated wave shapes. From IEEE's Emerald Book: It is important to ensure that low-impedance grounding and bonding connections exist among the telephone and data equipment, the ac power system's electrical safety-grounding system, and the building grounding electrode system. ... Failure to observe any part of this grounding requirement may result in hazardous potential being developed between the telephone (data) equipment and other grounded items From Southwest Bell on surge protection: Surge protection takes on many forms, but always involves the following components: Grounding bonding and surge protectors. ... Grounding is required to provide the surge protector with a path to dump the excess energy to earth. A proper ground system is a mandatory requirement of surge protection. Without a proper ground, a surge protector has no way to disburse the excess energy and will fail to protect downstream equipment. Bonding is required to electrically connect together the various grounds of the services entering the premises. Without bonding, a surge may still enter a premise after firing over a surge protector, which will attempt to pass the excess energy to its ground with any additional energy that the services surge protector ground cannot instantly handle, traveling into and through protected equipment, damaging that equipment in the process. ... Now, if all the various service entrance grounds are bonded together there are no additional paths to ground through the premise. Even if all of the grounds cannot instantly absorb the energy, the lack of additional paths to ground through the premise prevents the excess energy from seeking out any additional grounds through that premise and the electronic equipment within. As such, the excess energy remains in the ground system until dissipated, sparing the protected equipment from damage. ... By far, the whole house hardwired surge protectors provide the best protection. When a whole house primary surge protector is installed at the service entrance, it will provide a solid first line of defense against surges which enter from the power company's service entrance feed. These types of protectors can absorb/pass considerably more energy than any other type of protector, and if one does catastrophically fail, it will not typically be in a living space. ... Plug in strip protectors are, at best, a compromise. At worst, they may cause more damage than they prevent. While they may do an acceptable job of handling hot to neutral surges, they do a poor job of handling any surge that must be passed to ground. Yawn... When you have a cite from those sources which say that plug-in surge protectors are not an effective part of surge protection strategy, post that. You had ignorance of two separate voltages on the same wire. You selectively misquote to protect myths taught by advertising. In some cases, you have no idea what that expert (ie Martzloff) was really saying. In part because you routinely ignore all numbers. You even confused an in-flight airliner with terrestrial protection. LOL. I didn't confuse anything. You claim surge protection is impossible without a direct, shore connection to ground. So, how do you explain that avionics on aircraft are protected against surges? Many airliners are fly-by-wire today, there are computers and electronics between the joystick and the ailerons and rudder. They don't have a short ground wire to earth. What's up with that? You quote a Belkin spec that makes no claims of protection from each type of surge. Due to ignorance, you quote then entire spec hoping something defines protection. Why post specs that do not claim to protect from typically destructive surges? Relevant concepts even in GZ's post and confirmed by Southwest Bell completely escape you - due to an education from advertising. It has the same listing of specifications as any whole house surge protector. I lists Max amps, H-N, N-G, etc, and it lists the max energy that it can dissipate. If it's OK for the whole house protector, then why isn't it good enough for the plug-in? To remain deceived, you even ignored what Martzloff says about plug-in (point of connection) protectors: Conclusion: 1) Quantitative measurements in the Upside-Down house clearly show objectionable difference in reference voltages. These occur even when or perhaps because, surge protective devices are present at the point of connection of appliances. The word plug-in is not even mentioned in the above. Lame, really, lame. Your accusations are provided by a sales promoter who has spend almost ten years following me as my personal troll. He is paid to promote myths and half truths. What is your excuse for denying basic electrical concepts? You did not even know that zero volts and over 100 volts could exist on the same wire. Wow, you're really losing it. My statements were my own. The fact that I agree with Bud, and the IEEE, NIST, etc, apparently upsets you. I've seen Bud post here for years, on a wide array of subjects. Somehow you only magically appear, like a bat out of hell, when someone makes a post about "surge protectors". Even the OP, has discredited you by now. But... If you have one shred of evidence to back up the claim that Bud is a sales promoter for surge protectors, I'm sure we'd all be interested in seeing it...... But, I'm not holding my breath. If the naive are in denial, then that proves protectors with no earth connection will magically make hundreds of thousands of joules disappear? Oh. bud says its not hundreds of thousands of joules. You know the sales promoter, who never did any of this, must be right? All IEEE Standards must be wrong - your reasoning. Yawn.... The IEEE guide shows plug-in surge protectors being used. So how does near zero joules in that Belkin magically make hundreds of thousands of joules just magically disappear. Simple. You deny those hundreds of thousands of joules even exist. And then create confusing by discussing in-flight aircraft. To mask what is, at best, an electrician's knowledge of electricity. Hundreds of thousands of joules never make it to the TV, computer, etc. Capiche now? |
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Surge Protector
On Fri, 13 Sep 2013 10:03:11 -0700 (PDT), "
wrote: Even the OP, has discredited you by now. OP here Westom is taking a beating, "don't cha know". My answer request was answered before he climbed into the ring |
#77
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Surge Protector
On Friday, September 13, 2013 4:14:12 PM UTC-4, Oren wrote:
My answer request was answered before he climbed into the ring Not only will they not interfere as others noted. Both protectors are more effective if what actually does protection is upgraded - connection to and quality of single point earth ground. |
#78
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Surge Protector
westom wrote:
On Thursday, September 12, 2013 8:00:52 AM UTC-4, wrote: It's not irrelevant because some of the same principles that are used in plug-in surge protectors deployed in a house apply: A 200 watt transmitter is connected to a long wire antenna. Touch one part of that antenna to feel no voltage. Touch another part to be shocked by maybe over 100 volts. How are two completely different voltages on the same wire? Because electrical concepts, unknown to you, also apply to surge protection. You don't really get shocked. You get burned. In the army, I used climb up the van to make sure the antenna was working by touching it. Those remote drones would spring the Shute if the signal was poor. I later made a box indicator so I didn't have to touch the antenna. Greg |
#79
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Surge Protector
On 9/13/2013 7:20 AM, westom wrote:
And why most of your posted specs say nothing about each type of surge. Just more nonsense. Some protectors even have protected equipment warranties. One of westom's favorite lies is that specs do not exist. I have posted specs many times (contrary to westom's lie), So have other people. A 5-year old could google for specs. It really doesn't matter - westom just continues to lie that they don't exist. Fewer and informed posters even have contradicted you. Another hallucination from westom. You have a bad habit of reading only what you want to hear. What a joke. Westom ignores everything that does not fit his very limited opinions about protection. Like for instance - obvious things westom ignores: - Why do the only 2 examples of protection in the IEEE guide use plug-in protectors? - Why does the NIST guide says plug-in protectors are "the easiest solution"? - Why does the NIST guide say "One effective solution is to have the consumer install" a multiport plug-in protector? - How would a service panel protector provide any protection in the IEEE example, page 33? - Why does the IEEE guide say for distant service points "the only effective way of protecting the equipment is to use a multiport [plug-in] protector"? - Why did Martzloff say in his paper "One solution. illustrated in this paper, is the insertion of a properly designed [multiport plug-in surge protector]"? - Why aren't airplanes crashing daily when they get hit by lightning (or do they drag an earthing chain)? Never answered, because they can't be answered. 120 volt electronics even 40 years ago could withstand 600 volt spikes without damage. Cite still missing. From IEEE's Emerald Book: The Emerald book (about protecting sensitive electronics) also explicitly recognizes plug-in protectors as effective. Another minor item that westom ignores. You selectively misquote to protect myths taught by advertising. What a joke. Westom is the king of selectively misquoting. Like Martzloff below. And one of first times I saw westom's drivel was at alt.engineering.electrical, where westom misconstrued the views of Arshad Mansoor who was a Martzlof coauthor, and provoked a response from an electrical engineer: "I found it particularly funny that he mentioned a paper by Dr. Mansoor. I can assure you that he supports the use of [multiport] plug-in protectors. Heck, he just sits down the hall from me. LOL." In some cases, you have no idea what that expert (ie Martzloff) was really saying. What a joke. Obviously it is westom that has no idea what Martzloff says. Like below. And like the NIST surge guide, which Martzloff wrote. To remain deceived, you even ignored what Martzloff says about plug-in (point of connection) protectors: As previously pointed out, the whole point of Marzloff's paper is that multiport plug-in protectors are effective. Westom totally misconstrues what Martzolff was saying. Why did Martzloff say in his paper "One solution. illustrated in this paper, is the insertion of a properly designed [multiport plug-in surge protector]"? Why can't you answer? And more recently Martzloff wrote the NIST surge guide that says plug-in protectors are effective. (Martzloff, incidentally, comes up a lot because he did a lot of surge research and has published a lot. He has put much of what he wrote on the internet.) He is paid to promote myths and half truths. If poor westom had valid technical arguments he wouldn't have to lie. Maybe westom got hit on the head with a plug-in protector when he was 5 yeas old. Oh. bud says its not hundreds of thousands of joules. Actually it is Martzloff that says it. In a published paper. Martzloff explained why, and I have repeated his explanation many times. Do you disagree with Martzloff? How about an answer. Where are the answers to simple questions? Westom is a fan of Josef Goebbels and thinks if you repeat a lie often enough, people will believe it. (It is not working westom.) You know the sales promoter, who never did any of this, must be right? The lie again. And I provide reliable sources that agree with what I write. All IEEE Standards must be wrong - your reasoning. The standards are right. Westom is wrong. Perhaps if he learned how to read, or even better how to think. He can just read the quotes I provided. There are 298,615,938 web sites, including 53,843,032 by lunatics, and westom can't find another lunatic that agrees with him that plug-in protectors do not work. Westom can't even answer simple obvious questions. For real science read the IEEE and NIST surge guides. Both say plug-in protectors are effective. |
#80
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Surge Protector
On Friday, September 13, 2013 7:19:05 PM UTC-4, westom wrote:
On Friday, September 13, 2013 4:14:12 PM UTC-4, Oren wrote: My answer request was answered before he climbed into the ring Not only will they not interfere as others noted. Both protectors are more effective if what actually does protection is upgraded - connection to and quality of single point earth ground. Inquiring minds want to know, how is it that here you have no problem with a surge protector protecting an AC unit? How can that be? You've argued over and over again, that without a short, direct connection to earth ground, protection is impossible. An AC unit doesn't have it's own, short, direct connection to earth ground. It's grounded back through the panel, just like a TV or computer would be. How is it possible that the surge protector for the AC unit can work, but a similar one for the TV can't because it doesn't have it's own earth ground? |
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