Journeyman Electrician #1 Exam Questions and Answers 100% Solved

Journeyman Electrician #1 Exam Questions and Answers 100% Solved A listed instantaneous water heater shall be permitted to be subdivided into circuits protected at NOT more than _____. a) 60 amperes b) 100 amperes c) 120 amperes d) 150 amperes - answerD: 150 amperes Ref: 422.11(F)(3) The interior of enclosures or raceways installed underground shall be considered to be a _____. a) wet location b) damp location c) moist location d) dry location - answerA: wet location Ref: 300.5(B) The continuity of the grounding conductor system for portable electrical carnival equipment shall 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 - answerD: each time the equipment is connected Ref: 525.32 A plate type grounding electrode shall be installed below the surface of the earth NOT less than _____. a) 24 inches b) 30 inches c) 36 inches d) 48 inches - answerB: 30 inches Ref: 250.53(H) Determine the MAXIMUM allowable ampacity of a size 1/0 AWG THW copper current-carrying conductor installed in a common raceway with three other current-carrying conductors of the same size. Ambilent temperature is 86°F. a) 150 amperes b) 105 amperes c) 112 amperes d) 120 amperes - answerD: 120 amperes Ref: Tbl. 310.16; Tbl. 310.15(B)(2)(a) Sol: Size 1/0 AWG THW ampacity (before derating) = 150 amperes 150 amperes x 80% (adjustment factor) = 120 amperes The NEC defines a continuous-load to be a load where the maximum current on the circuit is expected to continue for at least _____ hours or more. a) 3 b) 4 c) 6 d) 8 - answerA: 3 REf: Art. 100 Determine the MINIMUM size THW copper branch-circuit conductors required by the NEC to supply a three-phase, continuous duty, A