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#41
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Can I do this? Electrical
On Fri, 3 Mar 2017 20:57:33 -0600, philo wrote:
On 03/03/2017 03:40 PM, micky wrote: In alt.home.repair, on Fri, 3 Mar 2017 06:45:05 -0600, philo wrote: On 03/02/2017 10:11 PM, micky wrote: I know you're going to tell me to do this another way but I don't know how str I call bull****. In the amount of time you have spent posting here, you could have traced out that apparently unused wire and wired the thing properly. No, not even close. OK if you are not BSing, sorry about that I think it would have taken me five minutes to trace that wire though The difference, Philo, is YOU KNOW. He'd have to spend a couiple hours typing the questions to the newsgroup, and another couple stumbling through google trying to prove we were wrong, before starting to trace the wire, then he'd hook it up wrong and damage the timer, then go through the whole exercise again. A good case for why there are electricians (and mechanics) Thankfully this time he did the right thing and ordered the right switch for the job. Hopefully that solves his problem |
#42
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Can I do this? Electrical
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#43
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Can I do this? Electrical
On 3/3/2017 9:57 PM, philo wrote:
On 03/03/2017 03:40 PM, micky wrote: In alt.home.repair, on Fri, 3 Mar 2017 06:45:05 -0600, philo wrote: On 03/02/2017 10:11 PM, micky wrote: I know you're going to tell me to do this another way but I don't know how str I call bull****. In the amount of time you have spent posting here, you could have traced out that apparently unused wire and wired the thing properly. No, not even close. OK if you are not BSing, sorry about that I think it would have taken me five minutes to trace that wire though Depends on the home's construction. A stick built house on a 48" crawl space with attic access is quick and easy to run more romex. If it's CMU construction on a slab with a flat roof, a 5-minute job becomes an all-day project. |
#44
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Can I do this? Electrical
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#45
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Can I do this? Electrical
The current on that ground will be on every ground wire in your house. Not exactly true. It will just be on the grounding conductor going back to the main bonding jumper, that one circuit. (unless you have bonded that EGC to other circuits down stream of the MBJ) In normal installation these are star wired. It still can present a hazard and it is still a 250.6 violation. Whether it would impose the 5ma considered a threat to life would depend on the timer. There used to be a standard in U/L about how much ground current was acceptable from a device like this but it was in the range of 500 micro amps. I believe that has gone away tho. We have no idea what condition the wiring is in at this DIYer's home. Given the crazy idea he has expressed about consciously creating an electrical hazard and code violation, his priority for safety sounds low. With such an attitude, it is possible that his grounding electrode system is a mess. You are right about the standard going away for using the ground as a neutral. They found that multiple devices wired this way in a home has a cumulative effect on the ground current. I have a chart on my web site outlining the effects of electrical current on the human body: http://www.mrelectrician.tv/safety.html#currenteffects |
#46
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Can I do this? Electrical
On Friday, March 3, 2017 at 12:01:24 AM UTC-5, micky wrote:
In alt.home.repair, on Thu, 2 Mar 2017 20:37:15 -0800 (PST), wrote: The neutral and ground wires are often tied together at some pint in the house wiring. Rather than go to all this trouble, why not just have the timer run a table lamp placed on the kitchen table?? I want it to be the ceiling light, the same light I have on every night when I'm eating dinner etc. So it will look just as it usually does**. I'm going to be away for 11 weeks, plenty of time for someone to notice I'm not really there, so I dont' want to be obvious also. All the reasons on the web for not doing this are about the the ground being hot if the ground gets cut, and it will be, but any current that flows out of it will have to go through the switch's clock first. **I have another timer to turn a light on in my "office" a couple hours later, when I'm normally there. So what you are telling us is that there are bad guys watching your house so closely and so consistently that they will notice as soon as the light in the kitchen changes from a ceiling fixture to a lamp. Are you a spy or something? Who is watching your house so closely? Ok, so let's say they are watching your house that closely. Do you turn the kitchen light on and off every night at the exact time that the timer is going to? If not, the folks that are watching your house have 11 weeks to notice the exactness of the pattern and will know it's a timer. Of course, they are also probably going to know that you aren't home. They've already hacked your life and know your complete trip itinerary. Forget the timer. You're screwed anyway. |
#47
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Can I do this? Electrical
In alt.home.repair, on Fri, 3 Mar 2017 20:57:33 -0600, philo
wrote: On 03/03/2017 03:40 PM, micky wrote: In alt.home.repair, on Fri, 3 Mar 2017 06:45:05 -0600, philo wrote: On 03/02/2017 10:11 PM, micky wrote: I know you're going to tell me to do this another way but I don't know how str I call bull****. In the amount of time you have spent posting here, you could have traced out that apparently unused wire and wired the thing properly. No, not even close. OK if you are not BSing, sorry about that That's okay. I think it would have taken me five minutes to trace that wire though You also included "wired the thing properly". It would take me a long time** to decide If I'm ready to give up on the original task of that wire, to flash the kitchen lights when the alarm goes off. The wire is still connected to the relay that I thought was needed (althought the instructions for the alarm panel said everything** except that) and I realize I could use the horn/siren output and a flasher to flash the lights. I just remembered that IRC it already turned the hall light on when I walked in the door. Why didn't I connect that to the new panel? **So I have now decided. I'm not ready to "re-purpose" the wire.. And after all this the switch I bought from Amazon doesn't require a neutral -- can't even use one, only has 3 wires -- and it came at 6PM the day I ordered it. Still amazing. |
#49
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Can I do this? Electrical
It is an X-10 system Available under a few names I bought one at the
same time you did. I still have a few lights controlled by the timer. Now they even have screw in lamp modules. I started out with X-10 in my home but found them to be very unreliable. So I switched to Insteon devices (sold at smarthome.com). They communicate wirelessly in addition to sending signals over the power line. They have been much more reliable for me than X-10 ever was. I have modules for our porch lights, the lights on our detached garage, our hot water recirculating pump, and the fan for our fresh air ventilation system. I control them all using "Home Control Assistant" software on my computer. I tried a few different standalone timers for these devices, but find the computer control more reliable and easier to work with. Anthony Watson www.watsondiy.com www.mountainsoftware.com |
#51
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Can I do this? Electrical
On Sat, 04 Mar 2017 11:39:20 -0500, micky
wrote: One would get a tingle, but nothing more even from a 150 watt bulb. I don't want to let math get in the way of a good rant but a 150w bulb draws 1.25a when the filament is hot (~96 ohms) and it is pretty much a dead short when it is cold. (6.3 ohms on the one I just tested) You would get virtually 100% of available circuit voltage imposed on your body. only limited by your internal resistance. |
#52
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Can I do this? Electrical
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#53
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Can I do this? Electrical
On Saturday, March 4, 2017 at 11:05:47 AM UTC-5, micky wrote:
In alt.home.repair, on Fri, 3 Mar 2017 20:57:33 -0600, philo wrote: On 03/03/2017 03:40 PM, micky wrote: In alt.home.repair, on Fri, 3 Mar 2017 06:45:05 -0600, philo wrote: On 03/02/2017 10:11 PM, micky wrote: I know you're going to tell me to do this another way but I don't know how str I call bull****. In the amount of time you have spent posting here, you could have traced out that apparently unused wire and wired the thing properly. No, not even close. OK if you are not BSing, sorry about that That's okay. I think it would have taken me five minutes to trace that wire though You also included "wired the thing properly". It would take me a long time** to decide If I'm ready to give up on the original task of that wire, to flash the kitchen lights when the alarm goes off. The wire is still connected to the relay that I thought was needed (althought the instructions for the alarm panel said everything** except that) and I realize I could use the horn/siren output and a flasher to flash the lights. I just remembered that IRC it already turned the hall light on when I walked in the door. Why didn't I connect that to the new panel? **So I have now decided. I'm not ready to "re-purpose" the wire.. And after all this the switch I bought from Amazon doesn't require a neutral -- can't even use one, only has 3 wires -- and it came at 6PM the day I ordered it. Still amazing. As to wiring it properly, it's not clear to me what this other wire that was part of the alarm flashing was all about, but if it's a wire by itself or a wire in another cable separate from the hot, then it's not code compliant to use it as the neutral for the timer. |
#54
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Can I do this? Electrical
On Saturday, March 4, 2017 at 9:19:06 AM UTC-5, Ed Pawlowski wrote:
On 3/3/2017 9:55 PM, t wrote: At least 30 years ago, I went to Radio Shack and bought a switch replacement module. I installed it in a room, and using some other items that go with this switch, I could have that light turn on, off, or dim it from a timer, or turn it on and off from a hand held remote, and install more of these switches in other rooms and each one has their own number on the master control and on the remote. Later on, I bought some modules that plug into an outlet, and could turn a lamp, my stereo and other stuff in the home, all from my remote or the master control. I even rigged up around 3000 watts of outdoor xmas lights on these modules and could turn them on and off a block away from home. These modules cost around $15 each, (In the late 1980's) but were well worth the price. I'm sure they have advenced these devices even more by now. It is an X-10 system Available under a few names I bought one at the same time you did. I still have a few lights controlled by the timer. Now they even have screw in lamp modules. But as far as advancing, AFAIK X-10 hasn't advanced at all in a decade. It's low end stuff and while it can be fine for certain applications, it's certainly not what I'd use for any home automation where you want it to work reliably. For starters, all communication is one way, with no acknowledgment. Nor have I seen any new devices, any new tech, anything invested in it by any company in years. |
#55
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Can I do this? Electrical
On Saturday, March 4, 2017 at 1:00:30 PM UTC-5, wrote:
On Sat, 04 Mar 2017 11:39:20 -0500, micky wrote: One would get a tingle, but nothing more even from a 150 watt bulb. I don't want to let math get in the way of a good rant but a 150w bulb draws 1.25a when the filament is hot (~96 ohms) and it is pretty much a dead short when it is cold. (6.3 ohms on the one I just tested) You would get virtually 100% of available circuit voltage imposed on your body. only limited by your internal resistance. +1 Maybe Micky wants to volunteer to test it out and see what kind of "tingle" he gets. |
#56
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Can I do this? Electrical
On Friday, March 3, 2017 at 5:07:05 PM UTC-5, micky wrote:
In alt.home.repair, on Fri, 3 Mar 2017 08:37:23 -0800 (PST), TimR wrote: On Friday, March 3, 2017 at 11:27:20 AM UTC-5, wrote: On Fri, 3 Mar 2017 05:16:03 -0800 (PST), John G wrote: The current on that ground will be on every ground wire in your house. I think you mean voltage. Not exactly true. It will just be on the grounding conductor going back to the main bonding jumper, that one circuit. (unless you have Going down to where the ground wire is broken (if it ever gets broken.) If it's broken, it will iiuc have 110 volts, but the moment the current begins to flow, the resistance of the timer/wall switch will lower it tremendously. You could do this test yourself. Take a lamp, cut the cord down the middle and then cut the neutral wire, the wire that would have gotten plugged into the wide slot (whether the plug is polarized or not, one can tell which wire goes to the narrow slot and which would have gone the wide one, by looking or with a meter.) Plug the lamp in, then measure the voltage at the cut end of the wire from the lamp. it will be 110VAC or so but if you touch it, even if another** part of you is grounded , you'll only get the electricity that can squeeze through the lightbulb. **But don't let it flow through your heart, your torso. Don't hold the wire in one hand and use your other hand to ground yourself. Even if it is teeny and probably can't hurt you. A 100W light bulb has ~.8A running through it when it's at operating temp. Cold, the resistance is probably about 10 ohms, giving it the potential to put up to 12A through you. In your test, the light bulb is not a safety device, limiting the current. What would limit the current is the resistance of your body in the circuit, which is orders of magnitude higher than that of the cold light bulb. And your "tingle" test has the potential to kill someone. |
#57
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Can I do this? Electrical
On Sat, 4 Mar 2017 10:38:06 -0800 (PST), trader_4
wrote: On Saturday, March 4, 2017 at 9:19:06 AM UTC-5, Ed Pawlowski wrote: On 3/3/2017 9:55 PM, t wrote: At least 30 years ago, I went to Radio Shack and bought a switch replacement module. I installed it in a room, and using some other items that go with this switch, I could have that light turn on, off, or dim it from a timer, or turn it on and off from a hand held remote, and install more of these switches in other rooms and each one has their own number on the master control and on the remote. Later on, I bought some modules that plug into an outlet, and could turn a lamp, my stereo and other stuff in the home, all from my remote or the master control. I even rigged up around 3000 watts of outdoor xmas lights on these modules and could turn them on and off a block away from home. These modules cost around $15 each, (In the late 1980's) but were well worth the price. I'm sure they have advenced these devices even more by now. It is an X-10 system Available under a few names I bought one at the same time you did. I still have a few lights controlled by the timer. Now they even have screw in lamp modules. But as far as advancing, AFAIK X-10 hasn't advanced at all in a decade. It's low end stuff and while it can be fine for certain applications, it's certainly not what I'd use for any home automation where you want it to work reliably. For starters, all communication is one way, with no acknowledgment. Nor have I seen any new devices, any new tech, anything invested in it by any company in years. I have a handful of X10 stuff here I got in a bundle from Ebay but about all I use it for is accent lighting way down in the back yard. It is pretty picky about where I plug the controller in and I do have the crossover in my panel. It seems that if the circuit is too long, even on the same phase it gets flaky. |
#58
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Can I do this? Electrical
On 03/04/2017 08:19 AM, Ed Pawlowski wrote:
[snip] It is an X-10 system Available under a few names I bought one at the same time you did. I still have a few lights controlled by the timer. Now they even have screw in lamp modules. Radio Shack called theirs "Plug 'n' Power", although they were X10. I still have a few of those. -- Mark Lloyd http://notstupid.us/ "Those Jesus freaks, well they're friendly but, the **** they believe has got their minds all shut." [Frank Zappa, "The Meek Shall Inherit Nothing"] |
#59
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Can I do this? Electrical
On Saturday, March 4, 2017 at 1:52:16 PM UTC-5, wrote:
On Sat, 4 Mar 2017 10:38:06 -0800 (PST), trader_4 wrote: On Saturday, March 4, 2017 at 9:19:06 AM UTC-5, Ed Pawlowski wrote: On 3/3/2017 9:55 PM, t wrote: At least 30 years ago, I went to Radio Shack and bought a switch replacement module. I installed it in a room, and using some other items that go with this switch, I could have that light turn on, off, or dim it from a timer, or turn it on and off from a hand held remote, and install more of these switches in other rooms and each one has their own number on the master control and on the remote. Later on, I bought some modules that plug into an outlet, and could turn a lamp, my stereo and other stuff in the home, all from my remote or the master control. I even rigged up around 3000 watts of outdoor xmas lights on these modules and could turn them on and off a block away from home. These modules cost around $15 each, (In the late 1980's) but were well worth the price. I'm sure they have advenced these devices even more by now. It is an X-10 system Available under a few names I bought one at the same time you did. I still have a few lights controlled by the timer. Now they even have screw in lamp modules. But as far as advancing, AFAIK X-10 hasn't advanced at all in a decade. It's low end stuff and while it can be fine for certain applications, it's certainly not what I'd use for any home automation where you want it to work reliably. For starters, all communication is one way, with no acknowledgment. Nor have I seen any new devices, any new tech, anything invested in it by any company in years. I have a handful of X10 stuff here I got in a bundle from Ebay but about all I use it for is accent lighting way down in the back yard. It is pretty picky about where I plug the controller in and I do have the crossover in my panel. It seems that if the circuit is too long, even on the same phase it gets flaky. I had X-10 controlling some outside lights, and a couple inside lights. Worked fine for a couple years, then mysteriously one of the inside lights which was on one of the plug-in modules, would no longer respond. So, figured it was the module. Tried a couple new ones, they wouldn't work. Tried moving that one to another spot where it worked showing it was good. The location was one of the closer runs to the panel, not significantly different than the other ones that worked. Tried using a cap at the panel to couple the two legs, even tried moving the circuit to another breaker on the same leg as the source module. Nothing would make it work. That remains one of the big X-10 mysteries. And nothing had changed in the house, ie no new eqpt, etc. Like you say, it's good for non-critical stuff if it works. And it's real cheap. |
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