wrote in message
...
On Tue, 28 Oct 2008 18:01:01 -0400, "RBM" wrote:


"Ultraglide" wrote in message
...
I need to run some wiring from my attic to the basement. Is it ok to run
it down the cold air return?

Yes, provided it's type MI, MC, or steal tubing or metal conduit. Can't
use
Romex or BX



The only wiring that can be inside ductwork is wiring going to
equipment inside the duct. Then the requirements on the wiring method
apply.

I think you're correct, and I can't say that I've ever run any kind of
wiring through an air duct, but when I read 300.22, it's pretty difficult to
make that distinction