UF-B Cable question

Old 12-03-14, 03:12 PM
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UF-B Cable question

I understand that if you run cable down through the spaces of concrete block you should use UF-B because of damp conditions. I was wondering about a cable running down a wood stud exterior wall that ultimately serves an exterior outlet? Does the code indicate UF-B for that as well? My son bought a home built in 1987 in Orlando, FL. This outlet was surely added after the home was built. Wondering if it was done the "right" way. Thank you.
Old 12-03-14, 03:15 PM
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NM can typically be run in the stud bay and into the back of a box mounted on the exterior of a wall. If the NM were run on the outside of the exterior it would be a code violation.
Old 12-03-14, 03:16 PM
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UF-B is not required in wood framed walls, even if it serves an exterior receptacle, unless that receptacle is not attached to the wall. If it runs under a patio, etc. then it would need to be in conduit or UF used.

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