Code Round 1
2. A dry-type transformer of less than 1000 volts and ___ KVA is permitted to be installed in a hollow space of a building, provided there is adequate ventilation.
a. 25
b. 37 1/2
c. 50
d. 112 1/2
What is 50 KVA?
(c.)
NEC 450.13(B)
43. Mechanical-type ____ timers are used when a single fixed-timed output for a set period of time is required to control a load during the entire time control power is applied.
a. on-delay
b. off-delay
c. interval
d. recycle
What is mechanical-type interval timers?
(c.)
EMC 5e-Sec 16-2
7. Communications wires and cables shall be separated at least ___ inches from conductors of any electric light, power, Class 1, non-power-limited fire alarm, or medium-power network-powered broadband communication circuits.
a. 4
b. 6
c. 24
d. 2
e. 12
What is 2 inches?
(d.)
NEC 800.133(A)(2)
39. Typically, motors can operate without damage if the circuit voltage is within ____ % of the nameplate rating.
a. 10
b. 5
c. 2
d. 15
e. 25
What is 10%?
(a. )
EMC 5e-Sec 28-3
103. A 600-amp main breaker service panelboard is fed with four parallel sets of 1/0 kcmil copper. What is the smallest copper grounding electrode conductor that can be installed to the steel structure?
a. 4 AWG
b. 1 AWG
c. 1/0 AWG
d. 3/0 AWG
What is 1/0 AWG?
(c.)
105, 600 x 4 = 422.4 kcmil Cu = 1/0 Cu
8. Table ____ in the NEC is used as a reference for underground installations of network-powered broadband communications conductors and cables.
a. 830.47(C)
b. 830.154(b)
c. 830.154(a)
d. 830.15
What is Table 830.47(C)?
(a.)
66. ____ is a method used to ensure that redundant equipment ages uniformly.
a. Lead-lag
b. O&M
c. Load shedding
d. Daylighting
e. Cogeneration
What is Lead-lag?
(a.)
17. The rating of any single cord-and-plug-connected appliance used on a 30-amp branch circuit shall not exceed ____ amperes.
a. 30
b. 27
c. 24
d. 16
What is 24 amperes?
(c.)
NEC 210.23(B)
51. LRC is the amount of current that a motor draws when rated voltage is applied and rpms equal _____.
a. 1800
b. 0
c. 900
d. 3600
What is rpms equal 0?
(b.)
EMC 5e-Sec 19-3
79. Wall-mounted luminaires weighing to more than ___ pounds can be supported by boxes (such as device boxes) not specifically designed to support luminaires, provided the luminaire (or its supporting yoke) is secured to the box with at least two No. 6 or larger screws.
a. 25
b. 50
c. 35
d. 6
e. 3
What is no more than 6 pounds?
(d.)
NEC 314.27(A)(1) Exc
25. The ampacity of the branch-circuit conductors and the rating or setting of overcurrent protective devices supplying fixed electric space-heating equipment consisting of resistance elements, with or without a motor, shall not be less than ____ percent of the total load of the motors and the heaters.
a. 100
b. 80
c. 50
d. 110
e. 125
What is less than 125 percent of the total load of the motors and the heaters?
(e.)
NEC 424.3(B)/210.20(A)
88. When calculating the maximum number of conductors permitted in conduit or tubing, all of the same size (total cross-sectional area including insulation), the next higher whole number shall be used to determine the maximum number of conductors permitted when the calculation results in a decimal of ____ or larger.
a. .8
b. .7
c. .5
d. .6
e. .9
What is a decimal of .8 or larger?
(a.)
NEC Ch.9-Note 7
32. For voltages of 600 or less, individual open service conductors in dry locations should be separated by ____.
a. 4 1/2"
b. 3 1/2"
c. 4"
d. 2 1/2"
What is 2 1/2 inches?
(d.)
NEC 230.51(C)(Table)
92. The temperature rating of a conductor is the maximum temperature, at any location along its length, that the conductor can withstand over a prolonged time period without ____.
a. tripping the breaker
b. short circuiting
c. serious degradation
d. a ground fault
What is without serious degradation?
(c.)
NEC 310.15(A)(3)I-Note 1
95. Which of the following methods is an acceptable method to identify the grounding pole on a grounding-type receptacle?
a. a green-colored, hexagonal-headed or -shaped terminal screw
b. an orange dot
c. a white-colored, round headed screw
d. an orange-colored, hexagonal-headed screw
What is a green-colored, hexagonal-headed or -shaped terminal screw?
(a.)
NEC 406.10(B)(1)
82. A 2 in. raceway is to be installed in a pull box for a straight pull; conductors are 4 AWG or larger. What is the MINIMUM length of the pull box as required by the NEC?
a. 4 in.
b. 12 in.
c. 16 in.
d. 24 in.
What is 16 inches is the minimum length?
(c.)
NEC 314.28(A)(1)
109. Given: You have a 2-gang box that contains two single-pole switches; unless the box is equipped with permanently installed barriers, the voltage between the switches shall not be in excess of _____ volts.
a. 125
b. 300
c. 480
d. 250
What is shall not be in excess of 300 volts?
(b.)
NEC 404.8(B)
87. Splices and taps shall be permitted in surface nonmetallic raceways having a removable cover that is accessible after installation. The conductors, including splices and taps, shall not fill the raceway to more than ____ percent of its area at that point.
a. 31
b. 40
c. 53
d. 75
What is not filling the raceway to more than 75% of its area?
(d.)
NEC 388.56
116. Where a metal lampholder is attached to a flexible cord, the inlet shall be equipped with an insulating brushing which, if threaded, shall not be smaller than nominal ____ inch pipe size.
a. 1/4
b. 3/8
c. 1/2
d. 5/8
e. 3/4
What is 3/8 inch pipe?
(b.)
NEC 410.62(A)
126. Which of the following listed types of batteries is NOT permitted for use as a source of power for emergency systems?
a. automotive
b. lead-acid
c. alkali
d. lithium
What is automotive?
(a.)
NEC 700.12(A)
128. For enclosing a mobile home supply cord, what is the maximum size conduit permitted between the branch-circuit panelboard of the mobile home and the underside of the mobile home floor?
a. 1 in.
b. 1 1/4 in.
c. 1 1/2 in.
d. 2 in.
e. 3/4 in.
What is 1 1/4 in. conduit?
(b.)
NEC 550.10(G)
137. A continuous load is one expected to operate _____.
a. without stopping
b. for three hours or more
c. at peak connected load
d. none of these
What is for three hours or more?
(b.)
NEC 100_Continuous Load
134. When doing residential service and feeder calculations, clothes dryers are to be calculated at a minimum of ____ watts (VA), or the nameplate rating, whichever is larger.
a. 3000
b. 4500
c. 5000
d. 6000
What is a minimum of 5000 watts (VA)?
(c.)
NEC 220.54
141. When service-entrance conductors exceed 1100 kcmil for copper, the required grounded conductor must be sized not less than ____ percent of the area of the largest phase conductor.
a. 15
b. 19
c. 12.5
d. 25
What is a grounded conductor that must be sized not less than 12.5% of the area?
(c.)
NEC 250.24(C)(1)
146. A fire alarm system monitors the circuit cables connected to it and causes a trouble signal when a break in the wiring is detected. For fire alarm systems, this circuit monitoring is referred to as ____.
a. conduction
b. protection
c. supervision
d. zoning
What is supervision?
(c.)