May 2001
Test your knowledge of the code, by taking E.T.E.'s code quiz.
There are 10 questions, which are multiple choice.
Based on the 1999 Code Book.
Quiz by Robert Keis.
Question #1:
A nonmotor operated water heater rated 5.4 kW at 240-volt is
connected with a piece of No. 6 copper THHN conductor. The appliance is not marked with a
maximum OC device size. What is the maximum size of the overcurrent device permitted for
this water heater?
(A) 50
(B) 40
(C) 35
(D) 30
Question #2:
Two small appliance circuits are connected as follows to a
three-wire circuit. Line one to neutral has a 900 watt load connected to it. Line two to
neutral has a 1300 watt load connected to it. With both loads turned on what is the
wattage in the neutral?
(A) 2300
(B) 1300
(C) 900
(D) 400
Question #3:
The copper grounding electrode conductor required for a
1600-ampere service consisting of four sets of 750 kcmil THHN compact aluminum conductors
in parallel is:
(A) 2/0
(B) 3/0
(C) 250 kcmil
(D) 400 kcmil
Question #4:
What is the maximum size dual element fuse permitted to
protect a 60 hp. 3-phase, 480-volt squirrel-cage motor that is connected with a piece of
No. 3 copper THHN conductor?
(A) 80
(B) 125
(C) 150
(D) 175
Question #5:
A No. 14 THHN copper conductor is used within a motor starter
as a control circuit conductor. What is maximum size circuit breaker permitted for the
motor short-circuit, ground-fault protection that will protect this conductor?
(A) 15
(B) 20
(C) 45
(D) 100
Question #6:
What is the computed lighting load in amperes for a 208Y/120
feeder to supply an office area that is 125’ x 157’ and which has an unknown
receptacle load?
(A) 307
(B)
245
(C)
413
(D) 293
Question #7:
A mobile home park has 35 mobile home lots connected to one
service. Each mobile home has a calculated demand of 21,400 vA. What is the minimum size
of the service conductors in amperes to service this park?
(A) 559
(B) 749
(C) 3,120
(D) 3,500
Question #8:
The minimum headroom of the working space in front of a
200-amp. panelboard in which the top "Main" circuit breaker is mounted 6ft 5 in.
to the center of the breaker and the top of the panelboard is installed at a height of
6’11" in a new dwelling unit is _______ .
(A) No minimum
(B) 6ft. 5 in.
(C) 6 ft. 6 in.
(D) 6 ft.
11. in.
Question #9:
Which of the following is required for a receptacle installed
under the eaves of a two-story dwelling to be used for fixed outdoor deicing and
snow-melting equipment?
(A) Ground-fault
circuit-interrupter protection for personnel must be provided.
(B) Ground-fault protection of
equipment must be provided
(C) A dedicated 20-ampere
circuit must be provided
(D) A dedicated 15-ampere circuit
must be provided.
Question #10:
Branch-circuit conductors within 3 in. of a ballast within
the ballast compartment shall have an insulation temperature rating not lower than _____ oC.
(A) 60
(B) 75
(C) 90
(D) 105
Thanks for taking E.T.E.'s Code quiz!
If you find any discrepancies please feel free to email E.T.E. at http://www.elec-toolbox.com/email.htm.
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