The NEC requires electrical boxes to be mounted so that they are flush with the finished surface of walls made of both combustible and noncombustible materials.
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Q13: Nonmetallic device boxes used in residential wiring
Q14: In walls or ceilings made of noncombustible
Q15: Nonmetallic electrical boxes used for lighting outlets
Q16: If a box has one or more
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Q19: A wire that has its origin inside
Q20: In residential wiring, which of the following
Q21: A plastic nail-on single-gang device box has
Q22: Explain why lighting outlet boxes are permitted
Q23: When computing box fill, all internal clamps
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