InterNachi Electrical Material Exam Questions With Verified Answers.
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Course
InterNachi
Institution
InterNachi
InterNachi Electrical Material Exam
Questions With Verified Answers.
T/F: Electrical service masts can support telephone cables. - answerFalse
Fused neutral circuits were common in the __________. - answer1920s
T/F: All panel enclosures need to be bonded to ground - answerTrue
A live wire is s...
InterNachi Electrical Material Exam
Questions With Verified Answers.
T/F: Electrical service masts can support telephone cables. - answer✔False
Fused neutral circuits were common in the __________. - answer✔1920s
T/F: All panel enclosures need to be bonded to ground - answer✔True
A live wire is sometimes called a(n) ___________. - answer✔Unground conductor *It's
unground and there is nowhere for excess electricity so it is "Live"
In a false grounded receptacle, the ground wire is connected to ______________. - answer✔The
grounded conductor
A 4-wire, 240V cable assembly has _________, one neutral, and one ground conductor -
answer✔Two hots
______________ electrical wiring in an attic should not be within 6 feet of the entrance opening.
- answer✔Unprotected
Every 5 to 6 feet (roof), rigid service masts should be secured to __________. - answer✔The
Structure Points.
What clothing is unsuitable to wear during an electrical inspection - answer✔Nylon Clothing
What location in the home requires fixed lighting? - answer✔Kitchen
T/F: The inspector is required to test forVoltage drop on electrical receptacles - answer✔False
Are horizontally mounted face-up countertop receptacles allowed? - answer✔No, Because water
from a spill can go in.
Electric panel buses colored red, blue, and black are indicative of a ______________. -
answer✔3-Phase Supply
A service entrance with ________ connected conductor(s) is a 3-phase supply. - answer✔Four
If _______ is/are present, the panel should not be opened to inspect - answer✔Arcing, Smoke,
Exposed Wiring, Moisture, Rusting
______________ occurs when a spark jumps between an energized part and a grounded part -
answer✔Arc-Flashing
A _____-amp breaker should supply a minimum #12 conductor. - answer✔20
A __________ conductor should be connected to a 15-amp fuse or breaker. - answer✔14 AWG
Several grounded conductors ___________ terminate on the same lug. - answer✔Should not
What type of wiring do we need to recommend a specialist and why? - answer✔Aluminum: Less
durable, More expansion (loose connections), Can arc and catch fire
COPALUM is the only approved repair to _________wire terminations? - answer✔Aluminum
The first kind of residential wiring is called - answer✔Knob-and-tube
Wiring within 1.25 inches to the front of a _____ requires protection. - answer✔A stud
The inspector will find overheating with ____________ breakers - answer✔Any type of
defective breakers
In a fuse blown by ____, the metal strip is melted at its weakest point, breaking the flow of
current to the load - answer✔Electrical overload
When a fuse is blown by ____________, the metal strip is instantly heated to an extremely high
temp, causing it to vaporize - answer✔A short circuit
In a fuse that has not been blown, but whose bottom may be severely discolored and pitted,
likely suffers from ___. - answer✔A loose connection
Screw-in fuses are more properly called? - answer✔Edison Base Fuses
Upgrading to _____ fuses stops over-fusing - answer✔S
240-Volt breakers are connected to _________ in the panel - answer✔Two seperate bus bars
Gas supply piping cannot be used as a - answer✔Grounding means
Conductors between the main service disconnect to the distribution panels are called -
answer✔Feeders
The grounded and grounding conductors can/can not share a common bus in the service panel -
answer✔Can share**
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