Journeyman electrician exam prep
1. What table provides sizes for bonding jumpers for AC systems? - Answer: 250.102(C)(1).
2. According to the NEC, how long must a load operate continuously to be classified as such? - Answer: At least three hours.
3. For using adjustment factors in Table 310....
1. What table provides sizes for bonding jumpers for AC systems?
- Answer: 250.102(C)(1).
2. According to the NEC, how long must a load operate continuously to be classified as such?
- Answer: At least three hours.
3. For using adjustment factors in Table 310.15(B)(3)(A), how many current-carrying conductors must be
present in a raceway?
- Answer: Greater than three.
4. Where in the NEC codebook can you find EMT sizes for specific numbers and sizes of conductors?
- Answer: Annex C, Table C.1.
5. According to Section 210.20(A), what is the required overcurrent protection for branch circuits,
including continuous loads?
- Answer: Greater than 100% of the noncontinuous load plus 125% of the continuous load.
6. How close must Liquidtight Flexible Metal Conduit be fastened to each box or conduit termination?
- Answer: Within twelve inches.
7. What does 314.28(A)(1) state regarding straight pulls in pull boxes for conductors sized 4 AWG or
larger?
- Answer: The box length should be greater than or equal to eight times the trade diameter of the
largest conduit entering the box.
8. According to Chapter 9, note 4, what is the maximum filling for conduit nipples less than 24 inches in
length?
- Answer: 60 percent of their cross-sectional area.
, 9. In Table 348.22, what is the maximum number of insulated conductors allowed for 3/8 trade size
Flexible Metal Conduit (FMC)?
- Answer: 3.
10. How many general-purpose receptacles must guest rooms in hotels, motels, and dorms have that
are readily accessible?
- Answer: A minimum of two.
11. When branch-circuit conductors are inside a ballast compartment and within 3 inches of the ballast,
what is the minimum required temperature rating for those conductors?
- Answer: 90 degrees C. (Option b)
12. Class _____ locations are hazardous due to the presence of easily ignitable fibers or combustible
flyings.
- Answer: Class III (Option c).
13. Class _____ locations are those where flammable gases or vapors that can explode are present.
- Answer: Class I.
14. Class ____ locations are defined by the presence of combustible dust.
- Answer: Class II.
15. Conductors with _______ insulation have a greater ampacity when used in dry locations compared
to wet locations.
- Answer: THHW.
16. When calculating total load for buildings and determining the minimum branch circuit load for an
exterior electric sign, what factor must be included?
- Answer: Demand load (1.25).
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