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Journeyman Electrician Test
If you must guess on an exam question, most of the time the answer is... correct answersB or C As a general rule, an insulated equipment grounding conductor of a branch circuit shall be identified by which color? correct answersGreen 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. correct answers100 feet A building or other structure served shall be supplied by only one service except one where the capacity requirements are in excess of _________. correct answers2000 amps at a supply voltage of 1000 volts or less Disregarding exceptions, the minimum size overhead service-drop conductors shall be _______ AWG copper. correct answers8 gauge Where multiple driven ground rods are installed at a service, they shall be spaced not less than ______ feet apart. correct answers6 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. correct answers4 AWG A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an industrial establishment shall be ______. correct answersDust-tight The interior of enclosures or raceways installed underground shall be considered to be a _____ location. correct answersWet
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. correct answers120 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. correct answersThree 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. correct answers3 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? correct answers80 Amps A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load running current rating of _____. correct answers143 Amps What is the maximum distance that a disconnect switch is permitted to be located from the operator's station for a portable carnival ride? correct answers6 feet Determine the minimum trade size electrical metallic tubing (EMT) required to enclose eight, 6 guage AWG copper conductors with THHW insulation, when installed in a 50 foot conduit run. correct answers1.25 inch Where exceptions are not applicable, when a feeder supplies a continuous load of 240 amps, the overcurrent protection device protecting this feeder circuit shall have a rating of at least _______. correct answers250 amps Liquid tight flexible metal conduit LFMC shall be securely fastened in place within _____ of each box or other conduit termination. correct answers12 inches
A. A bonding jumper B. A grounding clip C. An identified bushing or threaded hub. D. An insulated grounding conductor. correct answersc. An identified bushing or threaded hub. Class _____ locations are those that are hazardous because of the presence of easily ignitible fibers or materials producing combustible flyings, but in which such fibers /flyings are not likely to be in suspension in the air in quantities sufficient to produce ignitable mixtures. a) I b) II c) III d) IV correct answersC. Class 3 A single phase, 240 volt, 15kVA standby generator may be loaded to a maximum of ______ per line. correct answers62.5 amps I = P/E In general, for other than dwelling units, all 15 and 20 amp, 125 volt, single phase receptacles installed on rooftops must be provided with ______. correct answersGFCI protection only Where the motor controller also serves as a disconnecting means, it shall open all ______ conductors to the motor. correct answersUngrounded Before demand factors are taken into consideration for commercial occupancies, general purpose receptacle loads are to be computed at not less than _____ per duplex or single receptacle outlet mounted on one yoke. correct answers180 VA Conductors with ______ insulation have a greater ampacity when used in a dry location compared to when used in a wet location. correct answersTHHW
Where a submersible pump is housed in a metal well casing, the well casing shall be _____ the pump circuit equipment grounding conductor? correct answersConnected to In a health care facility, low voltage electrical equipment that is likely to become energized that is frequently in contact with the bodies of patients, shall operate at a voltage of _____ or less if the equipment is not approved as intrinsically safe, double insulated or moisture resistant. correct answers10 volts When ambient temperature is not a factor, a size 8 AWG single copper conductor with type FEPB insulation, installed in free air, has an ampacity of ______. correct answers80 Amps For the purpose of determining conductor fill in a device box, a three way toggle switch is counted as equal to _____ conductors, based on the largest conductor connected to the switch. correct answersTwo When determining the required ampacity of the branch circuit conductors to supply a 3 phase, continuous duty AC motor, current values given on _____ shall be used. correct answersTable 430.250 of the NEC When calculating the total load for a building or structure, what is the minimum computed branch circuit load, in volt-amps, permitted by the NEC for a branch circuit serving an exterior continuous duty electric sign? correct answers1500 volt-amps Determine the maximum number of size 1 AWG XHHW compact conductors permitted in a trade size 3 inch, rigid schedule 40 PVC conduit more than 24 inches long. correct answers Infared commercial and industrial heating appliances shall have overcurrent protection not exceeding: correct answers50 Amps Class ______ hazardous locations are those in which flammable liquid-produced vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. correct answersClass 1
