Journeyman Electrician Exam Questions with Complete Solutions

Journeyman Electrician Exam Questions with Complete Solutions The continuity of the equipment grounding conductor system used to reduce electrical shock hazards for portable electrical carnival equipment shall be verified ____. - Answer-each time the equipment is connected Where the outer sheath of Type MI cable is made of steel _____. - Answer-a separate equipment grounding conductor shall be provided Electrical equipment such as distribution panelboards, motor controllers, and motor control centers that are located in other than dwelling units, and are likely to require examination, adjustment, servicing, or maintenance while energized, shall be field or factory marked to warn qualified persons of _____. - Answer-potential arc flash hazards Determine the MINIMUM size THW copper branch-circuit conductors required by the NEC® to supply a 3-phase, continuous-duty, AC motor that has a full-load current of 70 amperes. Assume all terminations to be rated for 75°C. - Answer-3 AWG The MINIMUM rating for a service disconnecting means for a building, other than a onefamily dwelling, consisting of three (3) 2-wire circuits shall be _____. - Answer-60 Amperes Class _____ locations are those that are hazardous because of the presence of easily ignitable fibers or where materials producing combustible flyings are handled. - AnswerIII A 208-volt, 3-phase, 50 hp, squirrel-cage, continuous-duty, Design C, AC motor has a full-load running current of _____. - Answer-143 amperes Determine the MAXIMUM number of size 14 AWG THHN conductors permitted to be installed in a trade size 3/8 inch flexible metal conduit (FMC) that contains a bare size 14 AWG grounding conductor when the FMC has external fittings. - Answer-4 Receptacles supplying power to freestanding-type office furnishings shall be located NOT more than _____ from the furnishing that is connected to it. - Answer-1 foot Disregarding exceptions, all of the following wiring methods listed are permitted to be used as a feeder for temporary wiring on a construction site EXCEPT _____. - AnswerType PD cord When a pull box contains conductors of size 4 AWG and larger and a straight pull of the conductors is to be made, the length of the box shall NOT be less than _____ times the trade diameter of the largest conduit entering the box. - Answer-8 In general, when feeder conductors of not over 600 volts supply a continuous load of 240 amperes, the overcurrent protection device protecting this circuit shall have a MINIMUM rating of _____. - Answer-300 amperes Luminaires installed under metal-corrugated sheet roofing decking shall be installed and supported so there is NOT less than _____ clearance from the lowest surface of the roof decking to the top of the luminaires. - Answer-1 1/2 in Given: You have determined a conductor has a computed allowable ampacity of 75 amperes. What is the MAXIMUM standard ampere rating of the overcurrent protection device the NEC® permits to protect this circuit? Assume this is not a motor circuit or part of a branch circuit supplying more than one receptacle. - Answer-80 amperes As a general rule, when a size 4 AWG or larger insulated conductor enters a panelboard, cabinet, or enclosure, which of the following must be provided? - Answeran insulated bushing When branch-circuit conductors supplying a luminaire are contained inside a ballast compartment and they are within 3 inches of the ballast, the conductors shall have a temperature rating of at LEAST _____. - Answer-90°C Which of the following listed types of batteries is NOT permitted for use as a source of power for emergency systems? - Answer-automotive Where exceptions are not to be applied, liquid tight flexible metal conduit (LFMC) shall be securely fastened within at LEAST_____ of each box, cabinet, or other conduit termination. - Answer-12 inches The interior of enclosures or raceways installed underground shall be considered to be a _____. - Answer-wet location In guest rooms or guest suites of hotels and motels, and sleeping rooms in dormitories, at LEAST _____ general purpose receptacle(s) installed in the room is/are required to be readily accessible. - Answer-two Determine the ampacity of a size 1/0 AWG THW copper current-carrying conductor installed in a common raceway with three (3) other current-carrying conductors of the same size. Ambient temperature is 86°F. - Answer-120 amperes A plate-type grounding electrode shall be installed below the surface of the earth NOT less than _____. - Answer-30 inches In Class II, Division 1, hazardous locations, where pendant mounted luminaires are suspended by rigid metal conduit (RMC) and a means for flexibility is not provided, the RMC stem shall have a length of NOT more than _____. - Answer-12 inches For the purpose of calculating the general lighting load for a dwelling unit, the floor area should include all of the following EXCEPT _____. - Answer-an open porch not adaptable for future use Determine the MINIMUM trade size electrical metallic tubing (EMT) required to enclose eight (8) size 6 AWG copper conductors with THHW insulation, where installed in a 60 foot conduit run. - Answer-1 1/4 For the purpose of determining conductor fill in a device box, a single-pole switch is counted as equal to _____ conductor(s), based on the largest conductor connected to the switch. - Answer-two What is the MINIMUM size equipment grounding conductor required by the NEC® for a branch circuit protected by a 50-ampere rated circuit breaker? - Answer-10 AWG What is the MINIMUM size equipment grounding conductor required by the NEC® for a branch circuit protected by a 50-ampere rated circuit breaker? - Answer-15 amperes