Quiz on the Code

2017 NEC® Updates

1. ____ fittings are required for raceways to compensate for thermal movement from different temperatures.
(a) Slip
(b) Threaded
(c) Expansion or deflection
(d) Threadless

2. Raceways on roof tops do not need temperature adder calculations unless the raceway is less that ____ above the roof.
(a) 2”
(b) 1”
(c) 7/8”
(d) 1/2”

3. When sizing the single phase feeder to a multi-family dwelling, and the feed is two phases and the neutral of a 3 phase 4-wire wye system, then ____ derating may be necessary.
(a) 75%
(b) 83%
(c) 90%
(d) 93%

4. When installing SE cable that is larger than # ____ AWG, use the temperature rating of the conductor.
(a) 12
(b) 10
(c) 8
(d) 6

5. EMT permitted uses include ____.
(a) In concrete
(b) In wet locations
(c) In some hazardous locations
(d) All of the above

6. If a receptacle that is replaced with another non-grounding receptacle, then a ____ is not required.
(a) GFCI receptacle
(b) AFCI receptacle
(c) DFCI receptacle
(d) Tamperproof receptacle

Answers:
1. (c) Ref: Art 300.7(B)
2. (c) Ref: Art 310.15(B)(3)(c)
3. (b) Ref: Art 310.15(B)(7)
4. (b) Art 338.10(B)(4)
5. (d) Ref: Art 358.10
6. (d) Ref: Art 406.4(D)(5)