Nonmetallic cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through nonflexible raceways not less than 18 in. or more than _____ ft in length if all of the required conditions in Sec. 312.5(C) are met.
a) 3
b) 10
c) 25
d) 100
See answer and applicable Code reference
The correct answer is: b) 10
Article 312 of the 201 NEC covers cabinets, cutout boxes, and meter socket enclosures. An Exception in 312.5(C) states, "Cables with entirely nonmetallic sheaths shall be permitted to enter the top of a surface-mounted enclosure through one or more nonflexible raceways not less than 18 in. and not more than 10 ft in length, provided all of the following conditions are met:". We will not list the seven conditions here, but you can view them on page 70-174 in the NEC.
