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.
On Friday, April 7, 2017 at 2:52:07 PM UTC-4, Terry Coombs wrote:
Doorbell wires, and thermostat wires for that matter, are not typically plu
a receptacle at the other end - at least not in my experience. This is a pl
ug and cord
device, with the plug being a 12VDC transformer.
That's why I'm wondering if it falls under the ”flexible cord" cate
gory or is that just for 110/220
On Fri, 7 Apr 2017 12:10:16 -0700 (PDT), DerbyDad03
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"
On Friday, April 7, 2017 at 2:05:57 PM UTC-4, DerbyDad03 wrote:
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.
On Saturday, April 8, 2017 at 12:33:10 AM UTC-4, firstname.lastname@example.org wrote:
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.
On Sat, 8 Apr 2017 05:21:23 -0700 (PDT), DerbyDad03
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
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.
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