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Articles/chapters > Chapter 2 Wiring And Protection > Flashcards

Chapter 2 Wiring And Protection Flashcards

1
Q

A 240 volt boat hoist receptacle has to be?

A

GFCI protected

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2
Q

Non-dwelling unit receptacles installed in/on the_____ shall be gfci protected.

A

Roof tops, outdoors, and sinks

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3
Q

What is the minimum rating for a laundry circuit in a single family dwelling?

A

20 amps and 1,500 watts

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4
Q

A receptacle on a individual branch circuit can be rated for what percent?

A

100%

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5
Q

What size branch circuit shall apply only non-lighting loads?

A

50 amps

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6
Q

What type of [lamp holder] shall be connected to a load in excess of [20 amps?]

A

Heavy duty

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7
Q

The laundry outlet shall be installed within how many feet of the designated location?

A

6 feet

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8
Q

Receptacle outlet in the floor shall not be counted as part of the required number of wall receptacles unless located within how many inches of the wall?

A

18 inches

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9
Q

What is the minimum number of small appliances for a single family dwelling?

A

2 circuits

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10
Q

Other than counter top appliances, what type of device is allowed to utilize the small appliance circuit in a single family dwelling?

A

Refrigerator, clocks, and cooking equipment

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11
Q

Receptacles shall be installed so that no point along the wall line of a kitchen countertop is no more than ____ inches measured horizontally from a receptacle in that space?

A

24 inches

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12
Q

What is the minimum length of countertop in a kitchen that required the installation of a receptacle?

A

12 inches

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13
Q

Island counter tops, with a minimum dimension of 12”W x 24”D, must have at least ____ receptacle outlet.

A

1

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14
Q

18 feet of show window requires how many receptacles above window?

A

2

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15
Q

What is the maximum distance from a roof unit that the rooftop gfci service receptacle shall be located?

A

25 feet

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16
Q

A conference room is 250 sq ft and has a 12.5 ft wall. How many floor receptacles are needed?

A

1

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17
Q

Does a vehicle garage door require illumination under the illuminated entryway rule?

A

No

18
Q

General branch circuit lighting load for a hospital shall be calculated at ___ watts per sq feet?

A

2

19
Q

In dwelling units, new additions to the lighting branch circuit shall be calculated in accordance with 220.12 when over ____ square feet.

A

500

20
Q

Where SE cable enters the building, the conduit has to be?

A

Sealed

21
Q

The conductors for festoon lighting shall be supported by messenger wire in all spans exceeding?

A

40 ft

22
Q

What is the minimum service rating for a single family dwelling with 6 or more 2 wire branch circuits?

A

100 amps

23
Q

Circuit breakers used as switches in 120V flourecent lighting shall be marked as?

A

SWD & HID

24
Q

What is the minimum height of a SE conductor rated 600 volts going above a pedestrian sidewalk?

A

15 feet

25
Q

The minimum number of disconnects at the main service?

A

6

26
Q

What is the minimum service disconnect of a commercial building?

A

60 amps

27
Q

Serve as overcurrent protection, I’ll just connecting me and Shelby supplied on the line side of all fused circuits that exceed 150 V if the fuses are accessible to who?

A

Other than qualified personnel

28
Q

Edison based fuses shall not operate at over then?

A

30 amps

29
Q

A type S fuse installed in an edison base fuse holder for what primary reason?

A

Non-interchangeable

30
Q

Conductor may be spliced together by____?

A

Exothermic welding

31
Q

What size grounded conductor you can run in parallel?

A

1/0

32
Q

Main panel enclosure serves as what?

A

Main bonding jumper

33
Q

High impedance ground systems operate at a minimum of what voltage?

A

480 volts

34
Q

A concrete encased electrode with electrically, conductive coated, steel, reinforcing bar shall be at least ______in diameter, and a minimum of 20 feet and continuous length?

A

1/2”

35
Q

Minimum size wire for ground ring?

A

2 copper

36
Q

How many feet of a rod electrode, be in contact with the Earth?

A

8 feet

37
Q

A ground rod shall be at least how many inches in diameter?

A

5/8”

38
Q

Minimum space between ground rods?

A

6 feet

39
Q

What size grounding electrode conductor must always be protected from physical damage?

A

6 or bigger

40
Q

When a metal enclosure is required to protect the grounding electrode conductor, the enclosure has to be bonded to what at both ends?

A

Grounding electrode conductor

41
Q

What is the minimum Size main bonding jumper for 800 kcmil service entrance conductor?

A

2/0

42
Q

What is the minimum Size copper clad grounding, electrode, conductor, needed for 200 amp single phase dwelling, copper feeder?

A

2 awg
200 x 83% 166 amps

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