Journeyman Electrician Actual Exam #3 Questions with Correct Answers

Journeyman Electrician Actual Exam #3 Questions with Correct Answers All wiring installed in or under an aircraft hanger floor shall comply with the requirements for _____ locations. a) Class I, Division 1 b) Class I, Division 2 c) Class II, Division 1 d) Class II, Division 2 - Answer-A: Class I, Division 1 Ref: 513.8(A) In general, branch-circuit conductors supplying more than one motor shall have an ampacity of at least _____ percent of the FLC of the largest motor, and 100 percent of the FLC of the other motor(s) in the group. a) 25 b) 80 c) 100 d) 125 - Answer-D: 125 Ref: 430.24 What is the MINIMUM size equipment grounding conductor required for a 5 HP, three-phase, 208-volt motor having 20- ampere rated overload protection and short-circuit overcurrent protection rated at 30 amperes? a) 10 AWG b) 14 AWG c) 12 AWG d) 8 AWG - Answer-A: 10 AWG Ref: Tbl. 250.122 If a circuit breaker serves as the controller for a motor, and the motor is not in sight of the breaker, the NEC requires which of the following? a) The motor to be less than 2 HP b) The breaker be able to be locked in the open position. c) The motor to be Code letter E d) The breaker to be rated 25,000 AIC. - Answer-B: The breaker be able to be locked in the open position. Ref: 430.102(B)(2), Ex. In Class II, Division 1, hazardous locations, an approved method of connection of conduit to boxes is _____. a) compression fittings b) threaded bosses c) welding d) all of these - Answer-B: threaded bosses Ref: 502.10(A)(4) Given: an AC service is supplied with four parallel sets of size 500 kcmil aluminum conductors. What is the MINIMUM size copper grounding electrode required, when connected to the concrete-encased building steel used as the grounding electrode system?