In sci.engr.electrical.compliance Chris Lewis wrote:
| According to volts500 :
| While the NEC does allow one to pass a Romex type cable straight through a
| cold air return as described, a safer method, and also permited by code,
| would be to install a 1/2" EMT with a connector attached at each end (to
| serve as bushings) and pass the Romex through the conduit.
|
| In Canada, the CEC does not permit you to do that. Hint: if the wire
| ever overheats, it's injecting noxious fumes _directly_ into your air
| handling. I'm surprised the NEC permits it.
|
| [That said, I _have_ seen it in older homes at least.]
|
| There's an exception for teflon coated wire (certain types of CAT-5 for
| example). And conduit of course. If you use EMT, you could probably
| get away with strapping it to the ducting for ground.

I wouldn't trust ducting for ground. How about a PVC conduit throught
the duct?

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| Phil Howard KA9WGN | http://linuxhomepage.com/ http://ham.org/ |
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