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Electricity Study Guide
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Home Maintance Unit 1
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1
What are the 3 main terms we measure electricity in?
Voltage, Current, Resistance (VCR)
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2
What does AC stand for?
Alternating Current
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3
What does DC stand for?
Direct Current
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4
How does wire sizing work in terms of number designations?
The higher the number, the smaller the wire; the lower the number, the bigger the wire.
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5
What are the colors and functions of the wires in standard 14-2 wire?
Black is hot, white is neutral, copper is ground.
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6
What are the colors and functions of the wires in standard 14-3 wire?
Black is hot, white is neutral, red is second hot, copper is ground.
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7
What are red flags in electrical systems?
Outdated breaker box, dim or flickering lights, electrical fires/house fires.
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8
What is the configuration of a standard outlet regarding wire connections?
Black wire goes on the brass-colored screw, white wire on the silver-colored screw, copper wire on the green-colored screw.
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9
What is the best possible electrical conductor?
Silver.
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10
How much insulation should be removed to make a “J” hook?
⅝ or 1 inch.
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11
What size wire is used in standard outlets?
Either 12 or 14 gauge wire.
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12
What size wire is used for larger appliances like a furnace or range?
6 gauge wire.
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13
What is conduit?
A type of metal or plastic tubing used to enclose and protect electrical wiring.
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14
What are the big common parts of the electrical system?
Breaker box, conduit, electrical wiring, electrical meter, circuit breakers, and fuses.
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15
How does power come into the house?
Through underground cable via the service panel or service wires connected to power lines.
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16
What terminals are on a three-way switch?
Common terminal, traveler terminals, and ground terminal.
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17
What is the name of the black terminal on a 3-way switch?
Common terminal.
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18
What are the brass terminals called on a 3-way switch?
Traveler Terminal.
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19
What item measures how much electricity is used in a house?
Electricity meter.
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