I'm considering drywall cover some part of the wood frame on the unfinished side of the basement. The wires and electrical boxes are exposed as in the picture. Not sure if it is necessary. I would appreciate your advice...
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2 Answers
No, but they do need to be secured to the framing according to the NEC schedule. You must staple (or otherwise restrain) within 12" of each box, and every four feet along framing members, centered on the board. By doing so you reduce the likelihood of cable damage due to snags and fastener penetration.
A neat wiring job involves straight, flat runs, gentle, consistent bends, and adequate stapling. For example:
answered Mar 24, 2017 at 13:36
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+1 But there is a requirement to protect cables from damage, so if they are in an area that would subject them to being hit or tugged, a covering might be needed.– bibCommented Mar 24, 2017 at 14:36
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Wouldn't they also need to add the little metal cover plates where the wires run through the framing members?– MobiusCommented Mar 24, 2017 at 14:44
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1Only where they're close to the surface. If you put your bores in the center of standard-size studs, they're not. Commented Mar 24, 2017 at 15:29
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@bib I think that it's generally assumed that wiring inside wall cavities is relatively safe. Wiring on the surface of walls, beams, joists, etc. is in a different category. Commented Mar 24, 2017 at 15:30
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How about using plywood board to cover up only the areas when the cables run ? is that going to be a fire hazard ?– DennisCommented Mar 24, 2017 at 15:43
You might want to consider armor-clad wiring in this case. It may not be required, but it would ensure the exposed wiring won't be damaged (which would cost more in the long run). This is also safer, since you reduce the risk of shock. We have an unfinished attic where I work that adjoins a finished room. On the unfinished side all wiring is armored.
answered Mar 24, 2017 at 14:39
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Armor-clad also the part of wire that pass through the studs ?– DennisCommented Mar 24, 2017 at 15:44
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You would want to go to metal boxes and armor clad inside the studs, yes Commented Mar 24, 2017 at 15:52
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To do that, do I replace the plastic outlet boxes with metal ?– DennisCommented Mar 24, 2017 at 15:57
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1This answer suggests unnecessary work from a code standpoint: AC cable is subject to the same physical damage requirements as the current NM wiring. Commented Mar 24, 2017 at 16:59