Journeyman Electrician Practice Exam, Exams of Electrical Engineering

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Journeyman Electrician Practice Exam

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Where the outer sheath of Type MI cable is made of steel _____________. A. it shall provide an adequate path to serve as an equipment grounding conductor B. a separate equipment grounding conductor shall be provided C. the grounding and grounded conductors shall be connected together D. it shall not be longer than 6 feet - ANSWERB. a separate equipment grounding conductor shall be provided The interior of enclosures or raceways installed underground shall be considered to be a _________ location. A. wet B. damp C. moist D. dry - ANSWERA. wet The continuity of the equipment grounding conductor system used to reduce electrical shock hazards 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 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 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 75C. A. 1 AWG B. 2 AWG C. 3 AWG D. 4 AWG - ANSWERC. 3 AWG Given: You have determined a conductor has a computed allowable ampacity of 75 amperes. What is the MAXIMUM standard ampere rating of the overcorrect 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.

A. 70 amperes B. 75 amperes C. 80 amperes D. 85 amperes - ANSWERC. 80 amperes A 208-volt, 3-phase, 50 hp, squirrel-cage, continuous-duty, Design C, AC motor has a full-load running current of _________. A. 130 amperes B. 143 amperes C. 162 amperes D. 195 amperes - ANSWERB. 143 amperes Determines the MAXIMUM allowable ampacity of a size 1/0 AWG THW copper current-carrying conductors of the same size. Ambient temperature is 86*F. A. 150 amperes B. 105 amperes C. 112 amperes D. 120 amperes - ANSWERD. 120 amperes

In class II, Division 1, hazardous locations, where pendant mounted luminaries are suspended by rigid metal conduit (RMC) and a means for flexibility is not provided, the RMC term shall have a length of NOT more than __________. A. 12 inches B. 18 inches C. 24 inches D. 30 inches - ANSWERA. 12 inches Luminaires installed under metal-corrugated sheet roofing decking shall be installed and supported so there is NOT less than ________ clearance from the roof decking to the top of the luminaires. A. 1 in. B. 1 1/4 in. C. 1 1/2 in. D. 1 3/4 in. - ANSWERC. 1 1/2 in. 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. A. 1 inch B. 1 1/4 inches C. 1 1/2 inches

D. 2 inches - ANSWERB. 1 1/4 inches When a pull box contains conductors of size 4 AWG and larger and a straight pull of 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. A. six B. four C. eight D. twelve - ANSWERC. eight 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 _________. A. NM Cable B. NMC cable C. Type PD cord D. Type SE cord - ANSWERC. Type PD cord 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. A. two B. three

C. four D. five - ANSWERC. Four In general, when feeder conductors of not over 600 volts supply a continuous- load of 240 amperes, the overcorrect protection device protecting this circuit shall have a MINIMUM rating of ____________. A. 240 amperes B. 300 amperes C. 250 amperes D. 275 amperes - ANSWERB. 300 amperes Where exceptions are not to be applied, liquid tight flexible metal conduit (LFMC) shall be securely fastened within at LEAST ________ of each box or other conduit termination. A. 4 1/2 feet B. 3 feet C. 12 inches D. 18 inches - ANSWERC. 12 inches For the purpose of calculating the general lighting load for a dwelling unit, the floor area should include all the following EXCEPT________. A. kitchens

B. bathrooms C. an unfinished basement intended for future living space D. an open porch not adaptable for future use - ANSWERD. an open porch not adaptable for future use Electrical equipment such as distribution panel boards, 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 __________. A. potential arc flash hazards B. arcing parts C. shock hazard warning D. conductor ampacity corrections - ANSWERA. potential arc flash hazards Which of the following listed types of batteries is NOT permitted for use as a source of power for emergency systems? A. automotive B. lead acid type C. alkali type D. all of these - ANSWERA. automotive

The MINIMUM rating for a service disconnecting means for a building, other than a one-family dwelling, consisting of three, two-wire circuits shall be _____. A. 15 amperes B. 30 amperes C. 60 amperes D. 100 amperes - ANSWERC. 60 amperes 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. A. one B. two C. three D. all - ANSWERB. two 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 ________. A. 105F B. 90C C. 75*C

D. 60F - ANSWERB. 90C

As a general rule, when a size 4 AWG or larger insulated conductor enters a panel board, cabinet, or enclosure, which of the following must be provided? A. a bonding jumper B. a grounding clip C. an insulated bushing D. an insulated grounding conductor - ANSWERC. an insulated bushing Class ________ locations are those that are hazardous because of the presence of easily ignitible fibers or where materials producing combustible flyings are handled. A. I B. II C. III D. IV - ANSWERC. III Receptacles supplying power to freestanding-type office furnishings shall be located NOT more than _______ from the furnishing that is connected to it. A. 6 feet B. 3 feet C. 1 foot

D. 8 feet - ANSWERC. 1 foot