Branch Circuits & WiringQuestion 160 of 521
When counting conductors for box fill in a device box, each 14 AWG current-carrying conductor that originates outside the box and terminates or is spliced within it counts as how many conductors?
a.One
b.Two
c.One-half
d.Zero
Explanation
Section 314.16(B)(1) counts each conductor that runs through the box or terminates in it as one conductor for box-fill volume. A 14 AWG conductor entering and terminating counts as one at 2.0 cubic inches. Counting it as two, one-half, or zero would misapply the box-fill calculation.
Law Reference: 2023 NEC §314.16Practice all 521 questions free — no signup required.
Related questions on this topic
- The dedicated equipment space above a panelboard indoors extends from the top of the equipment to what height, or to the structural ceiling if lower?
- At each conductor splice point, outlet, switch point, or junction in a raceway or cable system, what must generally be installed?
- Raceways, cable assemblies, boxes, and fittings must be securely fastened in place. Support wires that do not provide secure support are permitted only if what condition is met?
- A 125-volt receptacle located within 6 ft of the outside edge of a bathtub or shower stall in a dwelling requires what protection?
- Under 210.8(F), outdoor outlets for dwellings supplying equipment such as air-conditioning condensers, rated 150 volts or less to ground and 60 amperes or less, generally require what?
- In an attached dwelling garage with two vehicle bays, at least how many receptacle outlets are required, and in what location?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-10 Electrical Trade Examination · How we review