If I drill a hole from indoors to outdoors and mount an exterior outlet directly over the hole, do I need to use outdoor cabling even though it's not exposed to the elements?

1 Answer 1


Although it's done that way all the time, it's my opinion that if the box is in a wet location, the cable inside the box must be rated for wet locations. Sometimes an easy way to comply is set a box just inside the building, and transition from NM to UF in the indoor box, send the UF out to the outdoor box.

  • 1
    Or run it the last foot in conduit, and use THWN-2 individual wires. Dec 28, 2018 at 23:56

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