Michigan Practice Exam 2017 Flashcards
There are 6 conductors in a raceway connected to 75 degree C rated circuit breaker. Each wire has a 70 amp load using THHN. The minimum size conductors used are ________ AWG.
4 AWG
310.15(B)(16), 310.15(B)(3)(a)
Thermal insulation shall not be installed within ________ inches of recessed lighting fixtures.
3 inches
410.116(B)
A 1” conduit contains three 3-wire circuits or a phase system. All conductors are #10TW. Each circuit consists of two-phase conductors and one grounded conductor and one equipment grounding conductor. The max ampacity of each phase conductor is _____________?
24 amps
The volt/ampere rating of a device that consumes 14.5 amperes on a 240 circuit is _________?
3,480
VOLTS X AMPERE = VA
A 208 volt, 3 phase heater draws 3,598 watts. How many amperes does the heater draw?
10 Amps
P=Ex1.73/I
3598=208x1.73/I
I=3598/359.84
A pool underwater light fixture shall be installed at least _________ inches below the water level?
18 inches
680.23(A)(5)
A pools general-purpose receptacle shall not be installed less than ________ feet from inside wall of the pool.
6 feet
680.22(A)(1)
The junction box for the 120 volt wet-niche fixture shall be at least?
4 inches
680.24(A)(2)(a)
A metal fence installed with-in _______ feet of the pool shall be bonded.
5 feet
680.26(B)(7)
The feed to the wet-niche fixture shall be installed in _________ if installed in metal conduit.
Brass
680.23(B)(2)
A 15 or 20 amp receptacle shall be located with-in ________ feet of a roof top air conditioner?
25 feet, on the same level
210.63
The maximum over current protection for 8 current carrying #12 THHN conductors in a 1/2”EMTconduit is ________ amps.
20 amps
An AC system of 50 to 1,000 volts shall be grounded if maximum voltage to ground does not exceed _______ volts.
150 Volts
250.20(B)(1)
Type “S” adapters are installed in Edison base fuse holders to _________.
To limit the size of the fuse installed.
240.53(B)
A laundry branch circuit shall be rated at ________ amps.
20 amps
210.11(c)(2)