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NCCER MODULE 6 DEVICE BOXES PULL
JUNCTION BOXES COMPREHENSIVE STUDY
GUIDE 2026 SOLVED QUESTIONS AND
CORRECT ANSWERS
โโ Square metal boxes are available in sizes of 4" and____.. Answer: 4 and eleventh/sixteenths" (4 11/16) โโ A box installed under a roofed open porch is considered a ____.. Answer: damp location โโ **How many conductors(s) must be deducted for each strap- mounted device in a device box?. Answer: Two โโ **The capacity of an outlet box can be increased by using______.. Answer: raised device covers(extension rings) โโ A conductor under 12" (300 mm) long running through a box counts as the conductor equivalent of______.. Answer: 1
โโ If there are four equipment grounding conductors in a box, you must deduct _____ conductor(s) from the total allowed.. Answer: 1 โโ Box installations are covered in _______.. Answer: NEC Sections 314.15 through 314. โโ If the largest trade diameter of a raceway entering a pull box is 3", and it is a straight pull, the minimum size box allowed is ___.. Answer: 24" (3)(8)=24" โโ The depth of a pull box with conduit runs entering at right angles _____.. Answer: need only be deep enough to permit the proper installation of locknuts and bushings โโ ____ means constructed or protected so that exposure to beating rain will not result in the entrance of water under specified test conditions.. Answer: Raintight โโ A box designed and constructed to withstand an internal explosion without creating an external explosion or fire is called______.. Answer: Explosion-proof
Answer: Junction box โโ A(n) ______ is a device used to physically connect conduit or cable to an outlet box, cabinet, or other enclosure. Answer: connector โโ All boxes must be sized, installed, and supported to met the current ___ requirements.. Answer: NEC โโ Blank covers are used when boxes serve as __. Answer: Junction boxes โโ Each conductor origination outside of the box and terminating inside of the box counts as ___ conductor(s).. Answer: 1 โโ **When sizing outlet boxes, deduct ___ conductors(s) for each switch.. Answer: 2 โโ **For a straight pull, the minimum length of the box must be at least ____ times the trade diameter of the largest raceway..
Answer: 8 โโ The minimum length for a junction box in which the conductors are pulled at an angle and that contains two trade size 3" conduits and one trade size 4" conduit entering each side is _____. Answer: 30 โโ **Octagon and round boxes are used mostly for ____. Answer: Wall mounted lighting fixtures โโ **When sizing outlet boxes, ____ conductor(s) must be deducted for each strap mounted device.. Answer: 2 โโ **An extension ring is used to increase the ____ of the box.. Answer: depth โโ What is the maximum distance between receptacles along the floor line in any wall space?. Answer: 12'(12 feet) โโ
