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#1
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Can A 12V Power Supply Wire Be Run Through A Wall?
Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and
have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. |
#2
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Can A 12V Power Supply Wire Be Run Through A Wall?
DerbyDad03 wrote:
Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. They run doorbell wiring like that all the time ... drill the top plate and run the wire inside the wall , let it come out behind the drvice . -- Snag --- This email has been checked for viruses by AVG. http://www.avg.com |
#3
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Friday, April 7, 2017 at 2:05:57 PM UTC-4, DerbyDad03 wrote:
Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. What you have is a class 2, power limited circuit. In general, you could run CL2 rated cable to connect the transformer to the load. But I think that's assuming the equipment is listed to be used that way. For example, if it was an alarm system, you would just run CL2 cable from the transformer that plugs into a receptacle to the alarm panel. You could run it through walls, between floors, etc. But that transformer has terminals for connecting the wire, the alarm panel has terminals, etc, ie, it's intended to be used that way and listed for use that way. If you take something like a router and cut the cable, put the power source in one location connect it to the load, it's essentially the same, but IDK if it's kosher because it's not listed to be used that way. |
#4
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Friday, April 7, 2017 at 2:52:07 PM UTC-4, Terry Coombs wrote:
DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. They run doorbell wiring like that all the time ... drill the top plate and run the wire inside the wall , let it come out behind the drvice . -- Snag Doorbell wires, and thermostat wires for that matter, are not typically plugged into a receptacle at the other end - at least not in my experience. This is a plug and cord device, with the plug being a 12VDC transformer. That's why I'm wondering if it falls under the €flexible cord" category or is that just for 110/220 VAC |
#5
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 7 Apr 2017 11:05:54 -0700 (PDT)
DerbyDad03 wrote: Is there any code-compliant way well if that is your concern, government approval, go read the code yourself and get on with it. |
#6
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Can A 12V Power Supply Wire Be Run Through A Wall?
DerbyDad03 wrote:
On Friday, April 7, 2017 at 2:52:07 PM UTC-4, Terry Coombs wrote: DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. They run doorbell wiring like that all the time ... drill the top plate and run the wire inside the wall , let it come out behind the drvice . -- Snag Doorbell wires, and thermostat wires for that matter, are not typically plugged into a receptacle at the other end - at least not in my experience. This is a plug and cord device, with the plug being a 12VDC transformer. That's why I'm wondering if it falls under the "flexible cord" category or is that just for 110/220 VAC Yeah , but the wire you're running is only carrying 12V and that doorbell wire and furnace control wire are hooked to a 24v transformer at the other end , sounds like apples and apples to me ... -- Snag --- This email has been checked for viruses by AVG. http://www.avg.com |
#7
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03
wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. |
#8
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Can A 12V Power Supply Wire Be Run Through A Wall?
Put the trans in a firesafe box and let it rip.
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#9
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Can A 12V Power Supply Wire Be Run Through A Wall?
On 4/7/2017 2:05 PM, DerbyDad03 wrote:
Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. Ask the inspector when you apply for your electrical permit. |
#10
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 7 Apr 2017 12:10:16 -0700 (PDT), DerbyDad03
wrote: On Friday, April 7, 2017 at 2:52:07 PM UTC-4, Terry Coombs wrote: DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. They run doorbell wiring like that all the time ... drill the top plate and run the wire inside the wall , let it come out behind the drvice . -- Snag Doorbell wires, and thermostat wires for that matter, are not typically plugged into a receptacle at the other end - at least not in my experience. This is a plug and cord device, with the plug being a 12VDC transformer. That's why I'm wondering if it falls under the ”flexible cord" category or is that just for 110/220 VAC A doorbell transformer CAN be a plug-in device. 48volt nominal power on a POE device runs on Cat5 cable anywhere you want it - and the power injector is a plug-in device like your "wall wart" The "flexible cord" designation only applies to direct line connected/120 volt devices. Your Class 1 or class 2 power supplies are not covered by that code. Class 1 power-limited circuits are supplied by a power supply with an output that does not exceed 30 volts and 1,000 volt-amps. In general, a Class 2 circuit (operating at 24V with a power supply durably marked "Class 2" and not exceeding 100VA) is the type most commonly used. The NEC defines a Class 2 circuit as that portion of the wiring system between the load side of a Class 2 power source and the connected equipment. They are considered "intrinsically safe" |
#11
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Can A 12V Power Supply Wire Be Run Through A Wall?
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#12
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Friday, April 7, 2017 at 3:35:33 PM UTC-4, wrote:
On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. That's a fine suggestion, except that I'm talking about a basic 12VDC power adapter with a molded case and wi http://www.phidgets.com/images/3024_0_Web.jpg I'm assuming that this can't just be plugged into the attic receptacle and have the wire come through a hole in the wall. |
#13
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Can A 12V Power Supply Wire Be Run Through A Wall?
On 4/7/2017 6:42 PM, DerbyDad03 wrote:
That's a fine suggestion, except that I'm talking about a basic 12VDC power adapter with a molded case and wi http://www.phidgets.com/images/3024_0_Web.jpg I'm assuming that this can't just be plugged into the attic receptacle and have the wire come through a hole in the wall. Code aside, I've seen it done a few times. I'd do it myself if the need arose. If I had concerns about damage I'd put a plastic tube in the wall. |
#14
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 7 Apr 2017 15:42:01 -0700 (PDT), DerbyDad03
wrote: On Friday, April 7, 2017 at 3:35:33 PM UTC-4, wrote: On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. That's a fine suggestion, except that I'm talking about a basic 12VDC power adapter with a molded case and wi http://www.phidgets.com/images/3024_0_Web.jpg I'm assuming that this can't just be plugged into the attic receptacle and have the wire come through a hole in the wall. it can |
#16
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 07 Apr 2017 23:57:35 -0400, wrote:
On Fri, 07 Apr 2017 17:18:04 -0400, wrote: On Fri, 07 Apr 2017 15:35:14 -0400, wrote: On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. No, to be safe use Plenum cable. Plenum cable meets a higherr flamability standard than Riser and does not produce toxic fumes if and when it is overheated or burned. Certainly plenum rated cable is safer but not necessary unless this is going through an air handling space, Since he is penetrating a top plate to another floor it is a "riser". In any case, he won't be using either if he just drops the end of the cord from the wall wart down through the ceiling. |
#17
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Can A 12V Power Supply Wire Be Run Through A Wall?
Thomas wrote:
Put the trans in a firesafe box and let it rip. Good idea. Attic heat not so good for supply though. Greg |
#18
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Saturday, April 8, 2017 at 12:33:10 AM UTC-4, wrote:
On Fri, 07 Apr 2017 23:57:35 -0400, wrote: On Fri, 07 Apr 2017 17:18:04 -0400, wrote: On Fri, 07 Apr 2017 15:35:14 -0400, wrote: On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. No, to be safe use Plenum cable. Plenum cable meets a higherr flamability standard than Riser and does not produce toxic fumes if and when it is overheated or burned. Certainly plenum rated cable is safer but not necessary unless this is going through an air handling space, Since he is penetrating a top plate to another floor it is a "riser". In any case, he won't be using either if he just drops the end of the cord from the wall wart down through the ceiling. Not the plan as that would show. The plan would be to come out of the wall behind the device so that no wires are showing. Besides, whether it was plenum or riser wire, that would mean splicing the wire to the wart's wire. There are no screw terminals on the wart, although that could certainly be replaced with a screw terminal wart. However, that means that the proper plug at the device end would be required - added to the new cable, either spliced from the old or a new plug. Now things are getting ugly even if not showing. |
#19
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Sat, 8 Apr 2017 05:21:23 -0700 (PDT), DerbyDad03
wrote: On Saturday, April 8, 2017 at 12:33:10 AM UTC-4, wrote: On Fri, 07 Apr 2017 23:57:35 -0400, wrote: On Fri, 07 Apr 2017 17:18:04 -0400, wrote: On Fri, 07 Apr 2017 15:35:14 -0400, wrote: On Fri, 7 Apr 2017 11:05:54 -0700 (PDT), DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. To be safe, use "riser" cable (CLxR) "R" being the relevant factor. No, to be safe use Plenum cable. Plenum cable meets a higherr flamability standard than Riser and does not produce toxic fumes if and when it is overheated or burned. Certainly plenum rated cable is safer but not necessary unless this is going through an air handling space, Since he is penetrating a top plate to another floor it is a "riser". In any case, he won't be using either if he just drops the end of the cord from the wall wart down through the ceiling. Not the plan as that would show. The plan would be to come out of the wall behind the device so that no wires are showing. Besides, whether it was plenum or riser wire, that would mean splicing the wire to the wart's wire. There are no screw terminals on the wart, although that could certainly be replaced with a screw terminal wart. However, that means that the proper plug at the device end would be required - added to the new cable, either spliced from the old or a new plug. Now things are getting ugly even if not showing. Since most wall warts have a pretty short cable you usually will be splicing in another piece of wire anyway. It might as well be riser rated. On the grand scheme of things I doubt a few feet of non riser wire is going to change the fire that much but it is the rule when you are going from floor to floor. |
#20
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Can A 12V Power Supply Wire Be Run Through A Wall?
Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages.
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#21
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote:
Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? |
#22
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Can A 12V Power Supply Wire Be Run Through A Wall?
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#23
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Can A 12V Power Supply Wire Be Run Through A Wall?
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#24
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Sunday, April 9, 2017 at 11:30:44 AM UTC-4, wrote:
On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. +1 Clarabelle should just stay away from electricity. |
#25
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Sunday, April 9, 2017 at 11:30:44 AM UTC-4, wrote:
On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. Isn't *everything* electrical covered by code? Heck, even Pipe Organs have their own article. ;-) |
#26
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Sun, 09 Apr 2017 11:30:18 -0400, wrote:
On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. |
#27
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Sun, 09 Apr 2017 19:42:07 -0400, wrote:
On Sun, 09 Apr 2017 11:30:18 -0400, wrote: On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. . OK - I was wrong. Notice I specified "12 volt" wiring However I may have misunderstood the original situation. People are talking about attic and wires in the wall. The way "I" understood the question the OP had a device that mounted on the wall very close to the ceiling on either the main floor of a 2 storie, or the basement of either a single or multi story building, with an electrical outlet at the normal low-level postion directly above the location of the device, where the wall-wart could be connected. The question as I understood it was whether he could pass the power cable from the wall wart down through the upper floor and the ceiling below.. Now - ASSUMING this is a single family residence and the ceiling/floor is not required to be a total fire stop, there is no building code violation involved in drilling a hole in the ceiling or the floor. Also, I'm assuming, as usually is the case, the cavity between the upper floor and lower ceiling is not stuffed with insulation, which means any wiring in that cavity does not need to be oversized or de-rated for elevated temperatures. Also I'm ASSUMING the power supply is a pluf connected UL or CSA approved pwer supply that is current limited and listed as an ultra-low voltage class 1 or class 2 current limited device. with integrated wiring.. If all these assumptions are true, I don't believe there is any code that SPECIFICALLY prevents the OP from drilling a hole in the floor above and in the ceiling below and dropping the cord down to the wall mounted device. This does not "hide" the wires, but it greatly reduces the amount of exposed cable and removes the "wall wart" from view in the primary living space.. This is how I interpreted the original question. Running a piece of flexible tubing between the floors to guide the wire and prevent accidental damage might possibly be adviseable, but not required.. In my understanding the power supply MUST be accessible and can not be "permanently installed" Low voltage "lighting" is addressed in the code and is a different story UNLESS it is a "light tape" or "rope" type lighting device, which at least in Canadian Electrica Code, is exempt. Installing in an unfinished attic space might cross the line due to "accessibility" and insulation issues. 725.154 (B) Riser. Cables installed in risers shall be as described in any of (B)(1), (B)(2), or (B)(3): (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R. Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. (2) Other cables as covered in Table 725.154(G) and other listed wiring methods as covered in Chapter 3 shall be installed in metal raceways, or located in a fireproof shaft having firestops at each floor. (3) Type CL2, CL3, CL2X, and CL3X cables shall be permitted in one- and two-family dwellings. Listed general-purpose signaling raceways shall be permitted for use with Type CL2, CL3, CL2X, and CL3X cables. FPN: See 300.21 for firestop requirements for floor penetrations. |
#28
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Can A 12V Power Supply Wire Be Run Through A Wall?
On 04/09/2017 12:00 AM, DerbyDad03 wrote:
On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? The insurance company will pay the claim but likely refuse to renew the policy. With so much at stake, why not just do the job the right/safe way? https://www.wellsfargo.com/financial...ners-approval/ https://www.daveramsey.com/blog/can-...ance-be-denied |
#29
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Monday, April 10, 2017 at 5:17:17 AM UTC-4, Joe Schmoe wrote:
On 04/09/2017 12:00 AM, DerbyDad03 wrote: On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? The insurance company will pay the claim but likely refuse to renew the policy. With so much at stake, why not just do the job the right/safe way? Did you read my original post? |
#30
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Monday, April 10, 2017 at 12:21:11 AM UTC-4, wrote:
On Sun, 09 Apr 2017 19:42:07 -0400, wrote: On Sun, 09 Apr 2017 11:30:18 -0400, wrote: On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. . OK - I was wrong. Notice I specified "12 volt" wiring However I may have misunderstood the original situation. People are talking about attic and wires in the wall. The way "I" understood the question the OP had a device that mounted on the wall very close to the ceiling on either the main floor of a 2 storie, or the basement of either a single or multi story building, with an electrical outlet at the normal low-level postion directly above the location of the device, where the wall-wart could be connected. The question as I understood it was whether he could pass the power cable from the wall wart down through the upper floor and the ceiling below.. Now - ASSUMING this is a single family residence and the ceiling/floor is not required to be a total fire stop, there is no building code violation involved in drilling a hole in the ceiling or the floor. Also, I'm assuming, as usually is the case, the cavity between the upper floor and lower ceiling is not stuffed with insulation, which means any wiring in that cavity does not need to be oversized or de-rated for elevated temperatures. Also I'm ASSUMING the power supply is a pluf connected UL or CSA approved pwer supply that is current limited and listed as an ultra-low voltage class 1 or class 2 current limited device. with integrated wiring.. If all these assumptions are true, I don't believe there is any code that SPECIFICALLY prevents the OP from drilling a hole in the floor above and in the ceiling below and dropping the cord down to the wall mounted device. This does not "hide" the wires, but it greatly reduces the amount of exposed cable and removes the "wall wart" from view in the primary living space.. This is how I interpreted the original question. Running a piece of flexible tubing between the floors to guide the wire and prevent accidental damage might possibly be adviseable, but not required.. In my understanding the power supply MUST be accessible and can not be "permanently installed" Low voltage "lighting" is addressed in the code and is a different story UNLESS it is a "light tape" or "rope" type lighting device, which at least in Canadian Electrica Code, is exempt. Installing in an unfinished attic space might cross the line due to "accessibility" and insulation issues. 725.154 (B) Riser. Cables installed in risers shall be as described in any of (B)(1), (B)(2), or (B)(3): (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R. Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. (2) Other cables as covered in Table 725.154(G) and other listed wiring methods as covered in Chapter 3 shall be installed in metal raceways, or located in a fireproof shaft having firestops at each floor. (3) Type CL2, CL3, CL2X, and CL3X cables shall be permitted in one- and two-family dwellings. Listed general-purpose signaling raceways shall be permitted for use with Type CL2, CL3, CL2X, and CL3X cables. FPN: See 300.21 for firestop requirements for floor penetrations. I guess the remaining question there is what exactly they mean by "penetrating more than one floor". I would take it to mean that if the cable goes down from attic to a room, it's penetrating only one floor and therefore riser rated cable is not required. But it still has to be at least CL2 and the other code rules apply. |
#31
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Mon, 10 Apr 2017 00:20:40 -0400, wrote:
On Sun, 09 Apr 2017 19:42:07 -0400, wrote: On Sun, 09 Apr 2017 11:30:18 -0400, wrote: On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. . OK - I was wrong. Notice I specified "12 volt" wiring However I may have misunderstood the original situation. People are talking about attic and wires in the wall. The way "I" understood the question the OP had a device that mounted on the wall very close to the ceiling on either the main floor of a 2 storie, or the basement of either a single or multi story building, with an electrical outlet at the normal low-level postion directly above the location of the device, where the wall-wart could be connected. The question as I understood it was whether he could pass the power cable from the wall wart down through the upper floor and the ceiling below.. Now - ASSUMING this is a single family residence and the ceiling/floor is not required to be a total fire stop, there is no building code violation involved in drilling a hole in the ceiling or the floor. Also, I'm assuming, as usually is the case, the cavity between the upper floor and lower ceiling is not stuffed with insulation, which means any wiring in that cavity does not need to be oversized or de-rated for elevated temperatures. Also I'm ASSUMING the power supply is a pluf connected UL or CSA approved pwer supply that is current limited and listed as an ultra-low voltage class 1 or class 2 current limited device. with integrated wiring.. If all these assumptions are true, I don't believe there is any code that SPECIFICALLY prevents the OP from drilling a hole in the floor above and in the ceiling below and dropping the cord down to the wall mounted device. This does not "hide" the wires, but it greatly reduces the amount of exposed cable and removes the "wall wart" from view in the primary living space.. This is how I interpreted the original question. Running a piece of flexible tubing between the floors to guide the wire and prevent accidental damage might possibly be adviseable, but not required.. In my understanding the power supply MUST be accessible and can not be "permanently installed" Low voltage "lighting" is addressed in the code and is a different story UNLESS it is a "light tape" or "rope" type lighting device, which at least in Canadian Electrica Code, is exempt. Installing in an unfinished attic space might cross the line due to "accessibility" and insulation issues. 725.154 (B) Riser. Cables installed in risers shall be as described in any of (B)(1), (B)(2), or (B)(3): (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R. Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. (2) Other cables as covered in Also note: and other listed wiring methods as covered in Chapter 3 shall be installed in metal raceways, or located in a fireproof shaft having firestops at each floor. (3) Type CL2, CL3, CL2X, and CL3X cables shall be permitted in one- and two-family dwellings. Listed general-purpose signaling raceways shall be permitted for use with Type CL2, CL3, CL2X, and CL3X cables. FPN: See 300.21 for firestop requirements for floor penetrations. OK (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R Does not apply - only going through one floor, therefo Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. Also does not apply. The installation requirements for the low-voltage wiring of information technology equipment (electronic data processing and computer equipment) located within the confines of a room that is constructed according to the requirements of NFPA 75, Standard for the Protection of Information Technology Equipment, are not covered by Article 725. Low-voltage wiring within these specially constructed rooms is covered in Article 645. Also, if listed computer equipment is interconnected and all the interconnected equipment is in close proximity, the wiring is considered an integral part of the equipment and therefore not subject to the requirements of Article 725. If the wiring leaves the group of equipment to connect to other devices in the same room or elsewhere in the building, the wiring is considered ‘‘wiring within buildings’’ and is subject to the requirements of Article 725. Note the first sentance of the second paragraph.If the wiring is "an integral part of the equipment" it is " therefore not subject to the requirements of Article 725" I still maintain the NEC does not address the situation as described above. |
#32
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Monday, April 10, 2017 at 12:10:59 PM UTC-4, wrote:
On Mon, 10 Apr 2017 00:20:40 -0400, wrote: On Sun, 09 Apr 2017 19:42:07 -0400, wrote: On Sun, 09 Apr 2017 11:30:18 -0400, wrote: On Sun, 09 Apr 2017 01:20:14 -0400, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. No code for class 1 or class 2 12 volt wiring. Perhaps you should take a peek at article 725. BTW "class 1" can also include 120v wiring (up to 600v) and from a life safety standpoint, there is no significant difference. That is why Class 1 circuits use chapter 3 wiring methods. Don't confuse Class 1 with Class 2 or Class 3 but all are covered by the code. . OK - I was wrong. Notice I specified "12 volt" wiring However I may have misunderstood the original situation. People are talking about attic and wires in the wall. The way "I" understood the question the OP had a device that mounted on the wall very close to the ceiling on either the main floor of a 2 storie, or the basement of either a single or multi story building, with an electrical outlet at the normal low-level postion directly above the location of the device, where the wall-wart could be connected. The question as I understood it was whether he could pass the power cable from the wall wart down through the upper floor and the ceiling below.. Now - ASSUMING this is a single family residence and the ceiling/floor is not required to be a total fire stop, there is no building code violation involved in drilling a hole in the ceiling or the floor. Also, I'm assuming, as usually is the case, the cavity between the upper floor and lower ceiling is not stuffed with insulation, which means any wiring in that cavity does not need to be oversized or de-rated for elevated temperatures. Also I'm ASSUMING the power supply is a pluf connected UL or CSA approved pwer supply that is current limited and listed as an ultra-low voltage class 1 or class 2 current limited device. with integrated wiring.. If all these assumptions are true, I don't believe there is any code that SPECIFICALLY prevents the OP from drilling a hole in the floor above and in the ceiling below and dropping the cord down to the wall mounted device. This does not "hide" the wires, but it greatly reduces the amount of exposed cable and removes the "wall wart" from view in the primary living space.. This is how I interpreted the original question. Running a piece of flexible tubing between the floors to guide the wire and prevent accidental damage might possibly be adviseable, but not required.. In my understanding the power supply MUST be accessible and can not be "permanently installed" Low voltage "lighting" is addressed in the code and is a different story UNLESS it is a "light tape" or "rope" type lighting device, which at least in Canadian Electrica Code, is exempt. Installing in an unfinished attic space might cross the line due to "accessibility" and insulation issues. 725.154 (B) Riser. Cables installed in risers shall be as described in any of (B)(1), (B)(2), or (B)(3): (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R. Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. (2) Other cables as covered in Also note: and other listed wiring methods as covered in Chapter 3 shall be installed in metal raceways, or located in a fireproof shaft having firestops at each floor. (3) Type CL2, CL3, CL2X, and CL3X cables shall be permitted in one- and two-family dwellings. Listed general-purpose signaling raceways shall be permitted for use with Type CL2, CL3, CL2X, and CL3X cables. FPN: See 300.21 for firestop requirements for floor penetrations. OK (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R Does not apply - only going through one floor, therefo Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. Also does not apply. The installation requirements for the low-voltage wiring of information technology equipment (electronic data processing and computer equipment) located within the confines of a room that is constructed according to the requirements of NFPA 75, Standard for the Protection of Information Technology Equipment, are not covered by Article 725. Low-voltage wiring within these specially constructed rooms is covered in Article 645. Also, if listed computer equipment is interconnected and all the interconnected equipment is in close proximity, the wiring is considered an integral part of the equipment and therefore not subject to the requirements of Article 725. If the wiring leaves the group of equipment to connect to other devices in the same room or elsewhere in the building, the wiring is considered è˜wiring within buildings鋳 and is subject to the requirements of Article 725. Note the first sentance of the second paragraph.If the wiring is "an integral part of the equipment" it is " therefore not subject to the requirements of Article 725" I still maintain the NEC does not address the situation as described above. A couple posts ago you told us there was no code for Class 1 or 2 12V wiring. Now you found the code. That's an improvement! |
#33
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Mon, 10 Apr 2017 05:17:12 -0400, Joe Schmoe wrote:
On 04/09/2017 12:00 AM, DerbyDad03 wrote: On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? The insurance company will pay the claim but likely refuse to renew the policy. With so much at stake, why not just do the job the right/safe way? https://www.wellsfargo.com/financial...ners-approval/ https://www.daveramsey.com/blog/can-...ance-be-denied I'd say what he is proposing - as I understood it - IS a safe way. Beyond the fact that the wiring is part of a "listed device" (unless it is some cheap chinese knock-off that has not met any listing requirements), what is the difference between what he is proposing and a doorbell circuit, or a CATV security camera wiring, or wiring for an alarm system with active sensors, or telephone wiring? Phone companies install wiring through floors and walls all the time, as do alarm companies. And phone lines excede the "ultra low voltage" limit at nominally 50 volts. Off hook current on a phone system used to be around 80ma.(a lot less on new electronic phones) Regardless,I doubt any inspector would "flag" it, and it is no more dangerous than tunninh the cable along the floor or up the wall - likely less dangerous as it is less likely to be caught and damaged. |
#34
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Monday, April 10, 2017 at 12:27:31 PM UTC-4, wrote:
On Mon, 10 Apr 2017 05:17:12 -0400, Joe Schmoe wrote: On 04/09/2017 12:00 AM, DerbyDad03 wrote: On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? The insurance company will pay the claim but likely refuse to renew the policy. With so much at stake, why not just do the job the right/safe way? https://www.wellsfargo.com/financial...ners-approval/ https://www.daveramsey.com/blog/can-...ance-be-denied I'd say what he is proposing - as I understood it - IS a safe way. But there is a difference between being "safe" and being code compliant. The latter was the specific question asked. Beyond the fact that the wiring is part of a "listed device" (unless it is some cheap chinese knock-off that has not met any listing requirements), what is the difference between what he is proposing and a doorbell circuit, or a CATV security camera wiring, or wiring for an alarm system with active sensors, or telephone wiring? That those require at least CL2 listed cabling and possibly more, depending on where they are run? And his wall wart cable almost certainly is not CL2 listed. Phone companies install wiring through floors and walls all the time, as do alarm companies. And phone lines excede the "ultra low voltage" limit at nominally 50 volts. Off hook current on a phone system used to be around 80ma.(a lot less on new electronic phones) Regardless,I doubt any inspector would "flag" it, and it is no more dangerous than tunninh the cable along the floor or up the wall - likely less dangerous as it is less likely to be caught and damaged. IDK what an electrical inspector would do, but I would not be surprised if the typical home inspector flagged it. I agree it's *probably* not dangerous. I wouldn't be concerned about the safety aspects of running the cord through a ceiling hole, but I would be a bit concerned about putting one of those cheap Chinese wall warts in a hot attic that could reach 125F+. |
#35
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Can A 12V Power Supply Wire Be Run Through A Wall?
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#36
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Mon, 10 Apr 2017 14:08:08 -0400, wrote:
On Mon, 10 Apr 2017 12:10:49 -0400, wrote: OK (1) Cables installed in vertical runs and penetrating more than one floor, or cables installed in vertical runs in a shaft, shall be Type CL2R or CL3R Does not apply - only going through one floor, therefo Floor penetrations requiring Type CL2R or CL3R shall contain only cables suitable for riser or plenum use. Listed riser signaling raceways and listed plenum signaling raceways shall be permitted to be installed in vertical riser runs in a shaft from floor to floor. Only Type CL2R, CL3R, CL2P, or CL3P cables shall be permitted to be installed in these raceways. Also does not apply. Yes, I agree. The installation requirements for the low-voltage wiring of information technology equipment (electronic data processing and computer equipment) located within the confines of a room that is constructed according to the requirements of NFPA 75, Standard for the Protection of Information Technology Equipment, are not covered by Article 725. Low-voltage wiring within these specially constructed rooms is covered in Article 645. The requirements of 645 are stricter than 725 under a raised floor since this is usually an air handling space. "DP" cable is plenum rated. Once inspectors discovered computer rooms, lots of things changed. IBM had to replace thousands of miles of riser rated interface cables. Of course, I doubt there are that many computer rooms these days. Also, if listed computer equipment is interconnected and all the interconnected equipment is in close proximity, the wiring is considered an integral part of the equipment and therefore not subject to the requirements of Article 725. If the wiring leaves the group of equipment to connect to other devices in the same room or elsewhere in the building, the wiring is considered ‘‘wiring within buildings’’ and is subject to the requirements of Article 725. Note the first sentance of the second paragraph.If the wiring is "an integral part of the equipment" it is " therefore not subject to the requirements of Article 725" I still maintain the NEC does not address the situation as described above. How can that be true? By your own definition "If the wiring leaves the group of equipment to connect to other devices in the same room or elsewhere in the building, the wiring is considered ‘‘wiring within buildings’’ and is subject to the requirements of Article 725" EXCEPT when the cabling is part of a "listed device" - which the cord on the wall-wart is - when it is not addressed. |
#37
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Can A 12V Power Supply Wire Be Run Through A Wall?
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#38
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 07 Apr 2017 19:05:54 +0100, DerbyDad03 wrote:
Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. I'm in the UK and there's no rule about using flex instead of "twin and earth" (if that means anything over there). Why would there be? What's important is the current and voltage rating of the cable. I always use flex, it's far easier to get round corners etc. And since USA mains plugs are extremely dangerous compared to UK ones, I find it hard to believe your wiring code is stricter than ours. -- If swimming is so good for your figure, how do you explain whales? |
#39
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Fri, 07 Apr 2017 22:03:21 +0100, Safety Steve wrote:
On 4/7/2017 2:05 PM, DerbyDad03 wrote: Is there any code-compliant way to plug a 12V power supply pod into an attic receptacle and have the 12v wire run to a wall mounted device in the room below? The receptacle is close enough to the device's location that the cord will easily reach. The device is up near the ceiling, and we're trying to avoid running the power cord (or a track) up the wall, in plain sight. Would this be considered a flexible cord under NEC 400 and therefore not allowed, even though it's only 12V? If we can't, we'll run Romex from the attic receptacle and install a receptacle for the pod. It would just be neater (and easier) to use the attic receptacle. Constructive ideas are always welcome. Ask the inspector when you apply for your electrical permit. ROFL! -- The gene pool could use a little chlorine. |
#40
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Can A 12V Power Supply Wire Be Run Through A Wall?
On Mon, 10 Apr 2017 18:16:04 +0100, trader_4 wrote:
On Monday, April 10, 2017 at 12:27:31 PM UTC-4, wrote: On Mon, 10 Apr 2017 05:17:12 -0400, Joe Schmoe wrote: On 04/09/2017 12:00 AM, DerbyDad03 wrote: On Saturday, April 8, 2017 at 11:51:13 PM UTC-4, wrote: Insurance companies like to see that all wiring is/was up to code if they are to pay a claim for any future damages. I've heard that from lots of people, yet I have never heard of a case where they haven't paid. Do you know of anyone that has had a claim denied because of out of code wiring? Do you know of anyone who actually knows someone that had had a claim denied because of out of code wiring? The insurance company will pay the claim but likely refuse to renew the policy. With so much at stake, why not just do the job the right/safe way? https://www.wellsfargo.com/financial...ners-approval/ https://www.daveramsey.com/blog/can-...ance-be-denied I'd say what he is proposing - as I understood it - IS a safe way. But there is a difference between being "safe" and being code compliant. The latter was the specific question asked. If safe and code compliant are different, then the code needs to be changed. The code is there for safety. Beyond the fact that the wiring is part of a "listed device" (unless it is some cheap chinese knock-off that has not met any listing requirements), what is the difference between what he is proposing and a doorbell circuit, or a CATV security camera wiring, or wiring for an alarm system with active sensors, or telephone wiring? That those require at least CL2 listed cabling and possibly more, depending on where they are run? And his wall wart cable almost certainly is not CL2 listed. If he plugs in the wall wart as normal, it's fine, yet running it through the ceiling isn't?! Phone companies install wiring through floors and walls all the time, as do alarm companies. And phone lines excede the "ultra low voltage" limit at nominally 50 volts. Off hook current on a phone system used to be around 80ma.(a lot less on new electronic phones) Regardless,I doubt any inspector would "flag" it, and it is no more dangerous than tunninh the cable along the floor or up the wall - likely less dangerous as it is less likely to be caught and damaged. IDK what an electrical inspector would do, but I would not be surprised if the typical home inspector flagged it. I agree it's *probably* not dangerous. I wouldn't be concerned about the safety aspects of running the cord through a ceiling hole, but I would be a bit concerned about putting one of those cheap Chinese wall warts in a hot attic that could reach 125F+. Does the USA have regular inspections or something? In the UK that only happens if you rent out your house or sell it. -- You can lead a man to Congress . . . .. . . but you can't make him think. |
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