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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. 4 AWG
A disconnect switch enclosure installed in a Class 2, division 2, hazardous location in an
industrial establishment shall be ______. Dust-tight
The interior of enclosures or raceways installed underground shall be considered to be a _____
location. 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.
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. Three
, Journeyman Electrician Test With Solutions
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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. 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? 80 Amps
A 208 volt, 3 phase, 50 horsepower, squirrel cage, continuous duty, ac motor has a full load
running current rating of _____. 143 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? 6 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.
1.25 inch