Journeyman Electrician Test Questions and Answers 2024-2025, Exams of Engineering

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Journeyman Electrician Test 2024-2025.

Questions and Correct Answers. Graded A+

A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load running current rating of _____. - ANS143 Amps A branch circuit served by size 12 AWG conductors is a ______ rated circuit when protected by a 15 Amp circuit breaker. - ANS15 amp A building or other structure served shall be supplied by only one service except one where the capacity requirements are in excess of _________. - ANS amps at a supply voltage of 1000 volts or less A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an industrial establishment shall be ______. - ANSDust-tight A single phase, 240 volt, 15kVA standby generator may be loaded to a maximum of ______ per line. - ANS62.5 amps I = P/E 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. - ANS100 feet An indoor areas where walls are frequently washed, such as laundries or car washes, metallic conduit and metallic panelboards shall be mounted with a _____

space between the wall and conduit or panelboard when the equipment is installed. - ANS1/4 inch As a general rule, an insulated equipment grounding conductor of a branch circuit shall be identified by which color? - ANSGreen 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. - ANS180 VA 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 - ANSC. Class 3 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. - ANSClass 1 Conductors with ______ insulation have a greater ampacity when used in a dry location compared to when used in a wet location. - ANSTHHW

Conduit nipples not over 24 inches long may be filled to a maximum of _____ of their cross-sectional area. - ANS60 percent 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. - ANS120 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. - ANS 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. - ANSFour 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. - ANS3 AWG 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. - ANS1.25 inch Disregarding exceptions, the minimum size overhead service-drop conductors shall be _______ AWG copper. - ANS8 gauge 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. - ANSTwo

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? - ANS80 Amps If you must guess on an exam question, most of the time the answer is... - ANSB or C 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. - ANS10 volts In general, for other than dwelling units, all 15 and 20 amp, 125 volt, single phase receptacles installed on rooftops must be provided with ______. - ANSGFCI protection only In new installations the minimum clear working space the NEC requires between a 480 Y/277 volt switchboard and a 480 volt motor control center when facing each other is ______. - ANS4 feet In the guest rooms of hotels, motels, and sleeping rooms of dormitory units a minimum of _____ 125 volt, 15 or 20 amp, general purpose receptacles installed in the room is/are required to be readily accessible. - ANSTwo Infared commercial and industrial heating appliances shall have overcurrent protection not exceeding: - ANS50 Amps

Information technology equipment shall be permitted to be connected to a branch circuit by a listed power-supply cord having a length not to exceed: - ANS15 feet Liquid tight flexible metal conduit LFMC shall be securely fastened in place within _____ of each box or other conduit termination. - ANS12 inches The interior of enclosures or raceways installed underground shall be considered to be a _____ location. - ANSWet 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. - ANSThree Type MI cable shall be supported and secured at intervals not exceeding: - ANS feet Underground wiring is not permitted under a permanently installed swimming pool or within _____ distance of the pool, unless the wiring is supplying the associated pool equipment. - ANS5 feet What is the maximum distance that a disconnect switch is permitted to be located from the operator's station for a portable carnival ride? - ANS6 feet What is the maximum overcurrent protection allowed for the protection of resistance-type fixed electric space heating equipment? - ANS60 Amps What types of batteries are not permitted for use as a source of power for emergency systems? - ANSAutomotive

When a pull box or junction 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 pull box or junction box. - ANSEight 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 ______. - ANS Amps When branch circuit conductors are installed inside a ballast enclosure of a luminaire and are within 3 inches of the ballast, the conductors shall have a temperature rating not lower than ______, unless supplying a luminaire marked as suitable for a different insulation temperature. - ANS90 degrees celcius 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? - ANS1500 volt-amps 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. - ANSTable 430.250 of the NEC When size 4 AWG or larger conductors enter a panelboard, which of the following must be provided? A. A bonding jumper B. A grounding clip C. An identified bushing or threaded hub.

D. An insulated grounding conductor. - ANSc. An identified bushing or threaded hub. 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. - ANS4 AWG Where a submersible pump is housed in a metal well casing, the well casing shall be _____ the pump circuit equipment grounding conductor? - ANSConnected to 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 _______. - ANS250 amps Where multiple driven ground rods are installed at a service, they shall be spaced not less than ______ feet apart. - ANS6 feet Where the motor controller also serves as a disconnecting means, it shall open all ______ conductors to the motor. - ANSUngrounded Which of the listed conduits does the NEC permit to enclose conductors supplying wet niche underwater pool luminaries? - ANSSchedule 40 rigid PVC conduit