Journeyman Electrician Test Questions With Verified Answers

If you must guess on an exam question, most of the time the answer is... - Answer B or C As a general rule, an insulated equipment grounding conductor of a branch circuit shall be identified by which color? - Answer Green An emergency electrical disconnect provided for a gasoline motor. fuel dispensing pump must be located not more than _______ from the fuel dispensing device it serves. - Answer 100 feet A building or other structure served shall be supplied by only one service except one where the capacity requirements are in excess of _________. - Answer 2000 amps at a supply voltage of 1000 volts or less Disregarding exceptions, the minimum size overhead service-drop conductors shall be _______ AWG copper. - Answer 8 gauge Where multiple driven ground rods are installed at a service, they shall be spaced not less than ______ feet apart. - Answer 6 feet Where a one-family dwelling has a 200 amp, 120/240 volt, single phase main service panel and is supplied with size 2/0 gauge THW copper ungrounded line service entrance conductors in rigid metal conduit, the minimum required size of the bonding jumper for this service entrance conduit is _____ copper. - Answer 4 AWG A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an industrial establishment shall be ______. - Answer Dust-tight The interior of enclosures or raceways installed underground shall be considered to be a _____ location. - Answer Wet Determine the ampacity of four, size 1/0 gauge THW copper current carrying conductors installed in a common raceway with an ambient temperature of 86 degrees Fahrenheit. - Answer 120 Amps 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. - Answer Three Determine the minimum size THW copper branch circuit conductors the NEC requires to supply a 3 phase, continuous duty, as motor that draws 70 amps per phase. Consider all terminations are rated for 75 degrees celcius. - Answer 3 AWG Given: You have determined a conductor has a computed ampacity of 75 amps. What is the maximum standard amp rating of the overcurrent protection device the NEC permits to protect this circuit here this is not a motor circuit or part of a multi-outlet branch circuit supplying more than one receptical? - Answer 80 Amps A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load running current rating of _____. - Answer 143 Amps