Take the 2-minute tour ×  I'm looking to add some lights on
motion detectors (un-switched) and security cameras under the
eaves of our house. I know standard romex is often used in
attics, but the soffits seem like they might be more exposed to
weather. Our soffits are enclosed, like so: (picture from
wikipedia.org) View of Soffit  So, do I need to protect any
wires which reach into the soffit, such as would power the
pictured light? Or should I use wire rated for exterior use? I'm
also plotting some Cat 5e runs of a similar nature, should those
be protected/exterior as well?  share|improve this question I
believe exterior grade wiring is more resistant to high moisture
and UV degradation, which shouldn't be much of a concern for an
attic or soffit space since it's sheltered. –  BMitch Aug 30 '12
at 1:58 Regular NM is fine and meets NEC requirements. No need
to use UF cable –  shirlock homes Aug 30 '12 at 9:36 The cable
is not the problem in this situation, it's all enclosed so there
should be no problem usin