Journeyman Electrician # 1 Graded A+
1. What is the maximum allowed protection for circuits subdividing a listed instantaneous water heater? - a) 60 amperes - b) 100 amperes - c) 120 amperes - d) 150 amperes (Correct Answer: d) 150 amperes) - Reference: 422.11(F)(3)
2. How should the i...
2. How should the interior of raceways or enclosures installed underground be classified?
- a) wet location ✅ (Correct Answer: a) wet location)
- b) damp location
- c) moist location
- d) dry location
- Reference: 300.5(B)
3. How often must the continuity of the grounding conductor system for portable electrical carnival
equipment be verified?
- a) and recorded on an annual basis
- b) and recorded on a quarterly basis
- c) and recorded on a monthly basis
- d) each time the equipment is connected ✅ (Correct Answer: d) each time the equipment is
connected)
- Reference: 525.32
4. What is the minimum installation depth required for a plate-type grounding electrode below the
earth's surface?
- a) 24 inches
- b) 30 inches ✅ (Correct Answer: b) 30 inches)
, - c) 36 inches
- d) 48 inches
- Reference: 250.53(H)
5. What is the maximum ampacity of a 1/0 AWG THW copper current-carrying conductor, installed in a
raceway with three other similar conductors, at an ambient temperature of 86°F?
- Solution: The ampacity for 1/0 AWG THW before derating is 150 amperes. After applying an 80%
adjustment factor, the maximum ampacity is 120 amperes.
6. According to the NEC, how is a continuous load defined?
- a) 3 hours ✅ (Correct Answer: a) 3)
- b) 4 hours
- c) 6 hours
- d) 8 hours
- Reference: Article 100
7. What is the minimum size of THW copper branch circuit conductors needed to supply a three-phase,
continuous duty AC motor with a full-load current of 70 amperes, assuming all terminations are rated at
75°C?
- a) 1 AWG
- b) 2 AWG
- c) 3 AWG ✅ (Correct Answer: c) 3 AWG)
- d) 4 AWG
- Reference: 430.22(A); Tbl. 310.16
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