NM cable may only be used in dry locations, not damp or wet locations.
Putting it in conduit doesn't make any difference, as conduit in a
damp or wet location is itself considered a damp or wet location.
So the upshot is that you can't use NM until you are inside the house
(the crawl space, as long as it is dry). Outside you could use a
short piece of UF cable or use conduit and individual conductors such
The neutral conductor is normally a current carrying conductor. The
grounding conductor (EGC) is not supposed to be a normally current
carrying conductor. The EGC does need to be connected to the neutral
at one location in order to do it job of completing the circuit in
case of a fault.
However, if you connect the neutral and EGC in two different places,
then you have paralleled the neutral and EGC. As a result, the EGC
will be carrying part of the neutral current all the time. This can
result in current where it shouldn't be (such as the metallic frame of
equipment) and is a potential shock hazard.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.