Originally Posted By: roconnor This post was automatically imported from our archived forum.
I sometimes see nonmetallic sheathed cable run up the outside of homes in PVC conduit for retrofit work (to get to the attic).
Model codes (NEC 334.15.B or IRC E3702.3) indicate that it is acceptable to run the sheathed cable in PVC conduit when exposed to damage, but doesn't give a maximum length. Seems like it's pushing the exposed to damage provisions, even if it's sealed from the weather or installed with a better cable type (NMC). Any thoughts?
-- Robert O'Connor, PE
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Originally Posted By: roconnor This post was automatically imported from our archived forum.
I don’t see the restriction on sheathed cabled “outside” … did I miss that?
Also, it seems that continuous pvc conduit (or with flared end facing down at any connections) that has tight fitting gasketed LB connectors with silicone at the penetrations would not be a "wet" location ... perhaps it's why I see it done that way sometimes.
Still rubs me the wrong way for some reason, but I cant put my finger on ...  .
-- Robert O'Connor, PE
Eagle Engineering ?
Eagle Eye Inspections ?
NACHI Education Committee
I am absolutely amazed sometimes by how much thought goes into doing things wrong
Originally Posted By: Greg Fretwell This post was automatically imported from our archived forum.
Anything installed in a location “exposed to weather” is a wet location, even inside a conduit. NM is a dry location only wiring method.
It was never against the rules to put cables inside raceways but in 2002 they put specific permissive language in.
The only caveat is that you have to compute fill based on the widest dimension of an oval cable so a 2 wire romex ends up being a pretty fat "conductor". A 12/2 still fits in ?" conduit.