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#1
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Wire for smoke alarms?
I am in the middle of the whole house remodeling and my electrician
who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC |
#2
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Wire for smoke alarms?
On Feb 12, 4:12*pm, wrote:
I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? *I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? *I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Thats the code now adays, - if you are pulling wire thru the area anyways, why not, the extra cost is definitly worth a life. Dave |
#4
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Wire for smoke alarms?
On Feb 12, 3:12*pm, wrote:
I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? *I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? *I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Thats code, your electrician is right its not a bad idea to do it now. You will still have the chirping when batteries go low. The idea is that the batteries parallel the house power, the house power does not replace the need for batteries and they will still chirp and are monitored for weakness. But the alarms will be synched up and continue to work even on a dead battery until you get the battery replaced. |
#5
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Wire for smoke alarms?
On Feb 12, 4:34*pm, RickH wrote:
On Feb 12, 3:12*pm, wrote: I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? *I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? *I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Thats code, your electrician is right its not a bad idea to do it now. *You will still have the chirping when batteries go low. *The idea is that the batteries parallel the house power, the house power does not replace the need for batteries and they will still chirp and are monitored for weakness. *But the alarms will be synched up and continue to work even on a dead battery until you get the battery replaced.- Hide quoted text - - Show quoted text - yeah, what they all said. should just be 14/3 to an octagon box in each room, well worth it if the price is reasonable. nate |
#6
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Wire for smoke alarms?
wrote in message ... I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC You need to find out the code in your area. Many jurisdictions require 120 volt with battery backup, interconnected, one unit on each level, and one unit in each bedroom. Two locations where you don't install smokes is in the garage or kitchen |
#7
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Wire for smoke alarms?
"Mark" wrote in
: Careful with this advice - I think even the hardwired detectors often have a battery backup in case of a power failure. Check out sites like: http://smokesign.com/120vacharsmo1.html to see some options. "Red Green" wrote in message ... wrote in news:78afbbab-b2ca-4dfb-aabd- : I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Well, no battery changing. No annoying chirping when batteries get weak. Code often requires at least one wired one on each floor. If there is a fire it sure would be nice if they all went off so everyone has the earliest possible warning. As long as if one becomes defective the whole damn lot doesn't start chrping! Thanks. I stand corrected. |
#8
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Wire for smoke alarms?
"N8N" wrote in message ... On Feb 12, 4:34 pm, RickH wrote: On Feb 12, 3:12 pm, wrote: I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Thats code, your electrician is right its not a bad idea to do it now. You will still have the chirping when batteries go low. The idea is that the batteries parallel the house power, the house power does not replace the need for batteries and they will still chirp and are monitored for weakness. But the alarms will be synched up and continue to work even on a dead battery until you get the battery replaced.- Hide quoted text - - Show quoted text - yeah, what they all said. should just be 14/3 to an octagon box in each room, well worth it if the price is reasonable. nate Hey Nate, let the electrician pick the box!!! |
#9
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Wire for smoke alarms?
wrote in message ... I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC This is a good idea and well worth the effort. When they are all wired, if one goes off, they all go off. |
#10
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Wire for smoke alarms?
Mark wrote:
Careful with this advice - I think even the hardwired detectors often have a battery backup in case of a power failure. Check out sites like: http://smokesign.com/120vacharsmo1.html to see some options. "Red Green" wrote in message ... wrote in news:78afbbab-b2ca-4dfb-aabd- : I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Well, no battery changing. No annoying chirping when batteries get weak. Code often requires at least one wired one on each floor. If there is a fire it sure would be nice if they all went off so everyone has the earliest possible warning. As long as if one becomes defective the whole damn lot doesn't start chrping! All of mine do have backup batteries but they are providing no operating current so the batteries last roughly as long as their shelf life. And with good alkalines this is a _very_ long time. -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com |
#11
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Wire for smoke alarms?
On Feb 12, 5:49 pm, wrote:
On Tue, 12 Feb 2008 15:20:45 -0600, Red Green wrote: wrote in news:78afbbab-b2ca-4dfb-aabd- : I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC Well, no battery changing. No annoying chirping when batteries get weak. Code often requires at least one wired one on each floor. If there is a fire it sure would be nice if they all went off so everyone has the earliest possible warning. As long as if one becomes defective the whole damn lot doesn't start chrping! The code also requires battery backup so you still get the chirp. The electrician should be pulling 14/3 romex I am doing everything in EMT. So far over 200' of new EMT has been laid on top of the existing EMT pipes. I don't know if I can fit extra wires into what I have already. If it involves new rigid conduits to be laid the cost will not be insignificant. I hate to use romex. |
#12
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Wire for smoke alarms?
On Feb 12, 4:50 pm, "RBM" wrote:
wrote in message ... I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC You need to find out the code in your area. Many jurisdictions require 120 volt with battery backup, interconnected, one unit on each level, and one unit in each bedroom. Two locations where you don't install smokes is in the garage or kitchen Why not the kitchen? I would think the kitchen is the most likely smoke induced location. If you leave a stove on and went to talk on a phone and then things get burnt etc... |
#13
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Wire for smoke alarms?
G. Morgan wrote:
wrote in news:78afbbab-b2ca-4dfb-aabd- : I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Yes, have him wire 110V in all the bedrooms and outside the common sleeping areas at the minimum. Also wire a 18/4 FPL to each detector in a "daisy chain" fashion + one back to the alarm panel if you have one. That's a good point, if you ever think you want to add a fire alarm panel or security system that monitors your smoke detectors as well, you should pull some extra wire. should NOT be in the same conduit as 120VAC as 24VEDEC is typical; you could free-run plenum rated cable however (FPLP) you'll need two conductors to all smokes and don't t-tap. If you do this the smokes you use should have auxiliary alarm relay contacts. The reason for not t-tapping is for supervision of the wiring; there will be an end of line resistor (or other device, but I can only think of one panel off the top of my head where it's not a resistor and it's not one likely to be installed in a residence) at the last detector so the panel can check and see if it sees that resistor to monitor the loop for integrity. nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#14
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Wire for smoke alarms?
That's it exactly, you don't install them in rooms where smoke occurs in
normal use. If necessary, you'd use rate of rise heat detectors, besides you don't need your entire house screaming at you to tell you that you burned the toast wrote in message ... On Feb 12, 4:50 pm, "RBM" wrote: wrote in message ... I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC You need to find out the code in your area. Many jurisdictions require 120 volt with battery backup, interconnected, one unit on each level, and one unit in each bedroom. Two locations where you don't install smokes is in the garage or kitchen Why not the kitchen? I would think the kitchen is the most likely smoke induced location. If you leave a stove on and went to talk on a phone and then things get burnt etc... |
#15
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Wire for smoke alarms?
G. Morgan wrote:
Nate Nagel wrote: G. Morgan wrote: wrote in news:78afbbab-b2ca-4dfb-aabd- : I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Yes, have him wire 110V in all the bedrooms and outside the common sleeping areas at the minimum. Also wire a 18/4 FPL to each detector in a "daisy chain" fashion + one back to the alarm panel if you have one. That's a good point, if you ever think you want to add a fire alarm panel or security system that monitors your smoke detectors as well, you should pull some extra wire. should NOT be in the same conduit as 120VAC as 24VEDEC is typical; you could free-run plenum rated cable however (FPLP) you'll need two conductors to all smokes and don't t-tap. If you do this the smokes you use should have auxiliary alarm relay contacts. The reason for not t-tapping is for supervision of the wiring; there will be an end of line resistor (or other device, but I can only think of one panel off the top of my head where it's not a resistor and it's not one likely to be installed in a residence) at the last detector so the panel can check and see if it sees that resistor to monitor the loop for integrity. this applies for smokes hooked to an alarm panel Yeah, FPLP would be best (Fire Power Limited Plenum rated). I suggested 18 gauge 4 conductor cable to cover 4 and 2-wire smokes (in case the alarm panel is not compatible with 2-wire smokes). It's better to use 2-wire smokes because they require less current generally and do not require a EOL supervision relay module (still need to place a EOL resistor at the last detector). no alarm panel If no alarm panel is in use for now, the wire can be used for the interconnect (which is required) so all sounders go off if one detector trips. And at least you'll have the capability to add a monitored fire alarm in the future. You might also want to pre-wire for heat detectors in the garage, kitchen, attic, furnace closet, hot water heater closet... Pre-wire for CO detectors on each floor. I can't imagine wanting to use 4-wire detectors in a residential environment; typically it would just be 120VAC single station tandem units with aux. relays for optional monitoring. I suppose, if one had access to a warehouse of old fire alarm parts (well, um, I do...) one could install an old FA system in one's house like a Simplex 2001 or Pyro System 3 but I'm not sure why you'd want to nate "May I have your attention please. May I have your attention please. Hazardous gas has been detected in the second floor restroom. Hazardous gas has been detected in the second floor restroom. Please leave the building by the nearest exit. Do not use the elevators." -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#16
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Wire for smoke alarms?
On Feb 12, 2:12*pm, wrote:
I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? *I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? *I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC We use both types (code) right next to each otherr - not the backup- electrical type, they get zapped sometimes - most residential fires knock the power out soon after starting, real soon. If not started by the electrical in the fist place... change the batteries twice a year: dayight savings time / standard time. |
#17
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Wire for smoke alarms?
G. Morgan wrote:
Nate Nagel wrote: I can't imagine wanting to use 4-wire detectors in a residential environment; typically it would just be 120VAC single station tandem units with aux. relays for optional monitoring. I'm talking about 12VDC smokes w/ aux contacts (panel powered). Many alarm panels do not support 2-wire smoke loops. Like this one: http://www.systemsensor.com/html/cd.html?UniqueID=3 That'll work, but then you need to add notification appliances as well, and that's a whole nother ball of wax (unless you use standard 24VDC detectors with sounder bases) basically I still think the 120VAC/battery detectors with tandem connection are probably a simpler, more economical choice for a home install and provides all the functionality you need - the full "system" is useful for larger installations where you need annunciation by floor, zone, etc. Hey, let's go addressable, let's just get silly nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#18
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Wire for smoke alarms?
If you're doing a permit, then they'll probably REQUIRE that you hardwire
the smokers. Some jurisdictions say if you're doing a 50% or more remodel, then the electrical in the whole place has to come to current code. Your area may be drastically different. Hard wired smokers are nice, cause if one goes off, they all sound off. You may be too far from the room with the smoke to hear just one. Also, smokers should be in each bedroom, and outside each bedroom door or at least one in the hallway. Kitchens are not a good place for one. s wrote in message ... I am in the middle of the whole house remodeling and my electrician who is doing wiring for me told me I should have him wire for smoke alarms for all the rooms while he is at it. Is this worth the effort? I was planning on just using battery operated ones that you attach to the ceiling with a double sided tapes and only in the kitchen, garage and the family room where a fire place is located. What is the benefit of having a smoke alarm that is hard wired? I asked him and he said that if it's hard wired and chained together, then if one goes off all goes off, ok so this is a slight plus. Comments? MC |
#19
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Wire for smoke alarms?
what the hell kind of house needs emt all over?
s wrote in message ... I am doing everything in EMT. So far over 200' of new EMT has been laid on top of the existing EMT pipes. I don't know if I can fit extra wires into what I have already. If it involves new rigid conduits to be laid the cost will not be insignificant. I hate to use romex. |
#20
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Wire for smoke alarms?
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#21
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Wire for smoke alarms?
On Feb 13, 12:41*am, "S. Barker" wrote:
what the hell kind of house needs emt all over? wrote in message ... I am doing everything in EMT. *So far over 200' of new EMT has been laid on top of the existing EMT pipes. *I don't know if I can fit extra wires into what I have already. *If it involves new rigid conduits to be laid the cost will not be insignificant. *I hate to use romex. I've been wanted to ask this for quite some time, and this looks like the thread to do it in! house is 4 years old. Since new, one wired smoke detector in one bedroom has been false alarming. of course, it sets off all the others. I have replaced the detector with new ones twice, but within a day or two, false alarm again. So it must be the wire running to that room, right? it's a bedroom, there's nothing happening that should set it off. I was thinking of tracing the existing wire, i guess it runs to the next detector in the series, and replacing the wire.only problem is, its tough to trace the wire because the attic has plywood flooring nailed down which will have to come up for that. |
#22
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Wire for smoke alarms?
On Tue, 12 Feb 2008 22:41:37 -0600, "S. Barker"
wrote: what the hell kind of house needs emt all over? I know someone here who wants to use it. One reason is rats that chew on the wires. s wrote in message ... I am doing everything in EMT. So far over 200' of new EMT has been laid on top of the existing EMT pipes. I don't know if I can fit extra wires into what I have already. If it involves new rigid conduits to be laid the cost will not be insignificant. I hate to use romex. -- Mark Lloyd http://notstupid.laughingsquid.com "Properly read, the Bible is the most potent force for atheism ever conceived." -- Isaac Asimov |
#23
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Wire for smoke alarms?
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#24
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Wire for smoke alarms?
On Wed, 13 Feb 2008 11:33:30 -0500, wrote:
On Wed, 13 Feb 2008 10:03:34 -0600, Mark Lloyd wrote: On Tue, 12 Feb 2008 22:41:37 -0600, "S. Barker" wrote: what the hell kind of house needs emt all over? I know someone here who wants to use it. One reason is rats that chew on the wires. Why not get rid of the rats? For one thing, poison is bad for the dogs. -- Mark Lloyd http://notstupid.laughingsquid.com "Properly read, the Bible is the most potent force for atheism ever conceived." -- Isaac Asimov |
#25
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Wire for smoke alarms?
On Wed, 13 Feb 2008 05:19:14 -0800 (PST), wrote:
of course, it sets off all the others. I have replaced the detector with new ones twice, but within a day or two, false alarm again. So it must be the wire running to that room, right? it's a bedroom, there's nothing little tiny spiders crawl in mine sometimes. But twice within a day or two? probably not likely. Smoke from candle or incense? Fumes from air fresheners or other chemicals (hair/body spray...)? Dust from air vent? Steam from the shower? happening that should set it off. I was thinking of tracing the existing wire, i guess it runs to the next the wire seems an even less likely culprit. If the wire were at fault, removing the bedroom detector would still leave the others falsing. sdb -- What's seen on your screen? http://PcScreenWatch.com sdbuse1 on mailhost bigfoot.com |
#26
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Wire for smoke alarms?
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#27
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Wire for smoke alarms?
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#28
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Wire for smoke alarms?
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#29
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Wire for smoke alarms?
On Wed, 13 Feb 2008 21:21:13 -0500, wrote:
On Wed, 13 Feb 2008 14:38:59 -0600, Mark Lloyd wrote: I know someone here who wants to use it. One reason is rats that chew on the wires. Why not get rid of the rats? For one thing, poison is bad for the dogs. ... and rat infestations are bad for people. Have you heard of the plague? There are plenty of ways to get rid of rats without poison. The first step is blocking the access points. She seems to have much more sophisticated reasons for wanting the wiring in exposed conduit, that what I know. -- Mark Lloyd http://notstupid.laughingsquid.com "Properly read, the Bible is the most potent force for atheism ever conceived." -- Isaac Asimov |
#30
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Wire for smoke alarms?
On Feb 12, 10:41*pm, "S. Barker" wrote:
what the hell kind of house needs emt all over? wrote in message ... I am doing everything in EMT. *So far over 200' of new EMT has been laid on top of the existing EMT pipes. *I don't know if I can fit extra wires into what I have already. *If it involves new rigid conduits to be laid the cost will not be insignificant. *I hate to use romex.- Hide quoted text - - Show quoted text - Most places in Chicago and its suburbs. |
#31
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Wire for smoke alarms?
OH? If so, then that's rediculous.
s wrote in message ... On Tue, 12 Feb 2008 22:41:37 -0600, "S. Barker" wrote: what the hell kind of house needs emt all over? One in Chicago? |
#32
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Wire for smoke alarms?
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#33
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Wire for smoke alarms?
On Thu, 14 Feb 2008 01:38:28 GMT, Tony Hwang wrote:
What? Rats? My gosh. Here in Alberta, rats are gone since 50's. We don't have rats but mouse. Ahh, yes. The other way to get rid of them is to rename them. sdb -- What's seen on your screen? http://PcScreenWatch.com sdbuse1 on mailhost bigfoot.com |
#34
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Wire for smoke alarms?
On Wed, 13 Feb 2008 13:54:10 -0700, sylvan butler
wrote: On Wed, 13 Feb 2008 05:19:14 -0800 (PST), wrote: of course, it sets off all the others. I have replaced the detector with new ones twice, but within a day or two, false alarm again. So it must be the wire running to that room, right? it's a bedroom, there's nothing little tiny spiders crawl in mine sometimes. But twice within a day or two? probably not likely. Smoke from candle or incense? Fumes from air fresheners or other chemicals (hair/body spray...)? Dust from air vent? Steam from the shower? According to a neighbor, their one hardwired alarm, on the ceilling of the second floor hall, was falsing so they took it out to get it repaired or replaced. While it was out, the analog clock in the stove, on the first place, set fire to the kitchen. This story was 2 to 4 months from start to finish. I'ts hard to imagine it going on for 4 years. P&M happening that should set it off. I was thinking of tracing the existing wire, i guess it runs to the next the wire seems an even less likely culprit. If the wire were at fault, removing the bedroom detector would still leave the others falsing. sdb |
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