Join Date: Mar 2018
Location: Huntington Beach, California
As an old phart of a retired Propeller Head, I would be very leery of code and anal retentive building inspectors. In reality a PVC pipe isn't any different than PVC conduit. Although Cat 5 / 5 E or 6 is intended for false ceilings (plenum or not) and inside walls it should work in PVC piping. In theory, building inspectors are supposed to ignore low voltage wiring (Except in the plenum.) but the magic words "Unused water pipe" rear their ugly head. The plenum requires Teflon jacketed for fire protection as a fresh air source, but see soap box below.
The only thing that I would be concerned about is "Unused water pipe" and there may be residual water left in the pipe. Knowing that we are supposed to avoid running Cat 5 next to metal, the possibility of water or wet environment would concern me. If you have plenum approved (i.e. Teflon jacketed) Cat 5, that may be good enough. However I don't know for sure about the effects of water on the Teflon jacket long term.
During the Apollo program, according to NASA specs 158B and MSFC 202 (?), cautions were noted about using thermal strippers on Teflon wire due to toxic fumes.
End Soap Box
In furniture 1/32" is a Grand Canyon
Last edited by NoThankyou; 04-11-2019 at 08:56 PM.