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Residential Wiring > Residential Wiring > Flashcards

Residential Wiring Flashcards

1
Q

A service entrance panel should be mounted how high above finished grade ?

A

48 to 72 inches

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2
Q

What is connected to a circuit breaker or fuse ?

A

The underground connector

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3
Q

On what side of the meter socket are the service entrance conductors that feed the service entrance panel connected ?

A

Load side

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4
Q

The current carrying capacity of a conductor depends on two things what are they ?

A

The material the wire is made of and the size or gauge of the wire

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5
Q

The size of the service entrance conductors depend on what ?

A

The total electrical load

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6
Q

What does 14/3 WG on Non-Metellic sheathed cables “Romex” tell you?

A

Size of the wire , number of conductors , with ground

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7
Q

When wiring a switch leg , the power enters what first ?

A

The light

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8
Q

A ground conductor will

A

Never be in series with a fuse , circuit breaker or switch

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9
Q

On a construction site, temporary service may remain in place until ?

A

The building is ready to receive power through its own panel

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10
Q

What do you call a safety device that automatically shuts off the power when an overload or short circuit occurs and can be manually reset

A

GFCI

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11
Q

What are 3 types of GFCI’s ?

A

° portable
°receptacle
°circuit breaker

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12
Q

What or who determines the side of the circuit breaker needed to protect a circuit ?

A

Gauge of the wire

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13
Q

A GFCI monitors the current balance between ?

A

Grounded and ungrounded conductors

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14
Q

Another name for a weather head is ?

A

Service head or service cap

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15
Q

Some light fixtures are center mounted on a threaded metal tube called a ?

A

Nipple

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16
Q

On a CSR what does the letter M connect to

A

Run winding

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17
Q

The power company needs how many feet of conductor hanging out of the service head to hook to their drop wires ?

A

3 to 4 feet

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18
Q

The NEC requires you have a minimum of how many small appliance circuits in a dwelling ?

A

2

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19
Q

What is the minimum copper wire size and circuit breaker size allowed in a dwelling ?

A

14 AWG @ 15 amps

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20
Q

What are the minimum copper wire and circuit breaker size for a small appliance circuit ?

A

12 AWG @ 20 amps

21
Q

What are the three most common symbols found on an electrical blueprint ?

A

Switch , ceiling fan outlet and duplex receptacle

22
Q

On a separate 120 V 20Va laundry room circuit , what other loads are allowed ?

A

any receptacle located in the laundry room

23
Q

Service entrance conductors that run up through metal conduit from underground into the SEP are called ?

A

Risers

24
Q

Two ways power can be brought into a building is ?

A

Overheard and underground

25
Q

Which color is a grounded conductor

A

White

26
Q

A meter shunt is

A

Wired around the water Heater

27
Q

What are 2 types of plug fuses ?

A

°Edision base

°Type s

28
Q

On a temporary service , all parts ,must be ?

A

Weatherproof

29
Q

What is the bonding screw or clamp used for ?

A

Bonding the panel to the ground

30
Q

On a three way switch the common connection will connect to ?

A

Only to a power source or a load

31
Q

A SEP has a buss bar for circuit breakers and ??

A

Ground and neutral bar

32
Q

When the power company installs their three conductors from the pole to the structure there is a bare conductor , what is the bare conductor called ?

A

Messenger

33
Q

A hallway is required to have an electrical outlet If it is at least how many feet in length ?

A

10 feet

34
Q

Most residential homes have what type of a power service delivered to the SEP?

A

120V/240V single phase

35
Q

When making wire connections on a switch or receptacles the wire should loop around the screw in a

A

Clockwise direction

36
Q

A light fixture that weighs more than ___ pounds must be supported independently from the box

A

50 pounds

37
Q

The ground bar in the SEP must be grounded to earth by connecting it to ?

A

A grounding electrode in contact with earth

38
Q

A GFCI will trip on a ?

A

5 milliamp current unbalance

39
Q

The minimum length of a ground rod is

A

8 ft

40
Q

When driving a ground rod , and rock bottom is encountered before the rod can be driven to its full length , the rod can be laid in a trench that is at least ?

A

2 1/2 ft

41
Q

In a switch loop circuit the white wire leading to the switch is ?

A

A hot conductor

42
Q

Under construction is considered a ?

A

Dry location

43
Q

What is the minimum number of a small appliance circuits you can use in a dwelling unit is ?

A

No maximum

44
Q

Construction specifications for non-metallic sheathed cable are the copper conductor sizes shall be ?

A

14 through 2

45
Q

Construction specifications for non-metallic sheathed cable are the aluminum conductor sizes shall be ?

A

12 through 2

46
Q

When installing Romex no bend should have a radius less than ?

A

5 times the diameter

47
Q

The largest stranded carriage fuse rating is

A

6000 amps

48
Q

Boring holes in the wood members and mounting the boxes is called

A

Roughing in

Residential Wiring (1 decks)

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