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Arizona Contractor License CR-67 Questions and Answers
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Arizona Contractor License CR-67 Questions and Answers
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Arizona Contractor License CR-67Questions and Answers
_____ occurs when there are two points in the circuit accidentally coming in contact. -
ANSWER-Short circuit
______ are limited energy cables suitable to be installed in vertical riser shafts without
conduit. - ANSWER-FPLR
______ refers to any enclosed wiring method. - ANSWER-Raceway
______ sideways are preferred when there is a need to, within the raceway, make
terminations splices, or taps to several devices. - ANSWER-Metal
_______ are limited energy cables suitable to be installed in environmental air plenum
spaces without conduit. - ANSWER-FPLP
_______ refers to the max output current under any noncapacitive load and with
overcurrent protection skipped. - ANSWER-Imax
________ is what serves as the demarcation point for voice, data, video ....etc. -
ANSWER-Intermediate Distribution Frame (IDF)
________ refers to the max volts - ampere output after a single minute of operation
disregarding load and overcurrent protection. - ANSWER-VAmax
A _______ is unintentional mess up. - ANSWER-Ground Fault
A _________ is the area of demarcation between intra -building and inter- building
cabling. - ANSWER-Main Distribution Frame (MDF)
A bonding jumper at least _____ AWG copper in size should be used to connect the
network - powered broadband communications system grounding electrode with there
power grounding electrode system. - ANSWER-6 AWG
A bonding jumper at least ______ AWG copper in size should be used to connect the
network -powered broadband communications system grounding electrode with the
power grounding electrode system. - ANSWER-6 AWG
A cable that is fire resistant should exhibit a max flame spread distance of no more than
_____ feet. - ANSWER-5 feet
A cable that is low smoke-producing should exhibit a max peak optical density of no
more than? - ANSWER-0.5
, A Class ____ enclosure must be strong enough to contain an explosion within. -
ANSWER-Class 1
A class _____ Circuit stays between the load side of a Class 2 power source and a
connected equipment. - ANSWER-2 Circuit
A Class ______ circuit permits higher voltage than a class 2 circuit. - ANSWER-3 circuit
A class ______ circuits always considers safety from a fire initiation standpoint. -
ANSWER-2 circuits
A Class _____, Division _____ Location is one with combustible dust not normally in the
air in quantities sufficient to produce explosive or ignitable mixtures and dust
accumulation are normally insufficient to interfere with the normal operation of electrical
equipment or other apparatus. - ANSWER-Class 2, Division 2
A Class ____, Division _____ Location is one with ignitable concentrations of flammable
gases or vapors exist under normal operating conditions; that ignitable concentrations of
such gases or vapors may exist frequently because of repair or maintenance operations
or because of leakage. - ANSWER-Class 1, Division 1
A Class 1 Circuit stays between? - ANSWER-The load side of the overcurrent device
and the connected equipment.
A Class 2 Circuit can have a max voltage of (choose all that apply). - ANSWER-20V, 5A
for a total of less than 100VA; 21V to 30V, 3.3A for a total of less than 100VA; or 31V
150V, .005A for a total of less than 0.5VA.
A Class 3 circuit always considers safety from a fire initiation standpoint - ANSWER-
True
A flexible cord of 2+ conductors may be treated as a single conductor for purpose of? -
ANSWER-The calculating the percentage conduit fill area.
A ground electrode conductor originates at the neutral or equipment ground bus of the
service panel? - ANSWER-True
A ground electrode should not be made in contact with the earth? - ANSWER-False.
sound be on contact with the earth
A lighting system that has an isolating power supply operating at no more than _____
volts peak under any load condition is considered as low voltage - ANSWER-30 Volts
A primary protector should be located as close as practicable to where the cable enters
the building. - ANSWER-True
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