Journeyman Wireman Electrical Test Study Guide NEC - Larry
Bobo Workbook
1. What is the required input conductor ampacity for a phase converter with a nameplate rating of 56
amperes for full-load single-phase input that supplies variable loads? - Answer: 70 amperes (Reference: Phase Converter...
Journeyman Wireman Electrical Test Study Guide NEC - Larry
Bobo Workbook
1. What is the required input conductor ampacity for a phase converter with a nameplate rating of 56
amperes for full-load single-phase input that supplies variable loads?
- Answer: 70 amperes (Reference: Phase Converters, NEC Section 455.6(A)(1)).
2. For a 277/480 volt 3-phase wye service, where should the grounded conductor be run and bonded?
- Answer: To each service disconnecting means (Reference: AC systems, grounding connections, NEC
Section 250.24(C)).
3. In a 480 volt 3-phase ungrounded parallel delta service, what should the equipment bonding jumpers
be based on?
- Answer: The size of the service entrance conductors in each raceway (Reference: NEC Section
250.102(C)(2)).
4. What safety feature must luminaires using metal halide lamps (other than PAR lamps) include?
- Answer: A containment barrier that encloses the lamp (Reference: NEC Section 410.130(F)(5)).
5. What is the maximum allowable rating for an overcurrent device for three parallel runs of 75°C-rated,
350 kcmil THHW copper conductors in EMT?
6. Where is liquidtight flexible metal conduit with listed fittings permitted?
- Answer: In Class I, Division 1 locations for lengths under 6 feet, provided with an equipment bonding
jumper (Reference: NEC Section 501.10(B)(2)(4), 501.30(B)(2)).
7. What classification applies to the area up to 18 inches above grade and within 20 feet from the edge
of an LPG dispenser at an outdoor motor fuel dispensing facility?
- Answer: Class I, Division 2 (Reference: Motor fuel dispensing facilities, NEC Section 514.3(B)(2), Table
514.3(B)(1)).
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