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Michigan Electrical Journeyman > Chapter 2 Wiring And Protection > Flashcards

Chapter 2 Wiring And Protection Flashcards

1
Q

A 240 V boat hoist receptacle Hass to be

A

210.8C

GFI protected

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2
Q

Non-dwelling unit receptacles installed in/on the _____ shall be GFI protected

A

210.8B

Rooftops, outdoors, sinks

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3
Q

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

A

210.11 C2
220.12 J
220.52 B

20 A 1500 W

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4
Q

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

A

210.22

100%

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5
Q

Branch circuits_____ Or larger supply only non-lighting loads

A

210.23D

50 A

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6
Q

What type of lampholder shall be connected to a load in excess of 20 A

A

210.24

Heavy duty

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7
Q

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

A

210.50 C

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 receptacle outlets unless located within how many inches of the wall

A

210.52.A3

18 inches

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9
Q

What is the minimum number of small appliance circuits free single-family dwelling

A

210.52B1

Two circuits

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10
Q

Other than countertop appliances what type of device is allowed to utilize the small appliance circuit in a single-family dwelling

A

210.52B1 and b2

Refrigerator, Clocks, cooking equipment

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11
Q

Receptacle outlets show me installed so that no point along the wall line of a kitchen countertop is more than_____ inches measured horizontally from a receptacle outlet in that space

A

24”

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12
Q

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

A

210.52C1

12 inches

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13
Q

Island countertops with a minimum dimension of 12 wide by 24 deep must have at least____ receptacle outlets

A

210.52C2

One

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14
Q

18 feet of shell window requires how many receptacles above window

A

210.62

2

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15
Q

What is the maximum distance from a rooftop unit that the rooftop GFI service receptacle shall be located

A

210.63

25 feet

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16
Q

A conference room is 250 ft.² and has 12 1/2 foot wall. How many floor receptacles are needed

A

322 ft.² or less is one outlet

1

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17
Q

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

A

210.70 A2

Man door
Service door

No

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18
Q

General branch circuit lighting load prehospital shall be calculated at_____ watts per square foot

A

220.12

Two watts per square foot

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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

220.16 A1

500 ft.²

20
Q

Where SE cable enters the building the conduit Has to be

A

225.27

Sealed


21
Q

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

A

225.6B

40 feet

22
Q

What is the minimum service rating for a single-family dwelling with six or more two wire branch circuits

A

230.79C

100 A

23
Q

Circuit breakers used as Switches in 120 V fluorescent lighting Shall be marked as

A

240.83D

SWD, HID

24
Q

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

A

230.24B

15 feet

25
Q

What is the maximum number of disconnects at the main service

A

230.71A

Six disconnects

26
Q

What is the minimum service disconnect of a commercial building

A

230.79D

60 A

27
Q

What cannot be connected to the supply side of a service disconnect

A

230.82 1-9

28
Q

When fuses serve as overcurrent protection, a disconnecting means shall be supplied on the line side of all fused circuit that exceed 150 V if the fuses are accessible to who

A
  1. 40
    
    Other than qualified personnel
29
Q

Edison base fuse holders shall be a maximum of what voltage

A

125 V

240.51 A

30
Q

Eddison base fuses shall not operate at over

A

240.51 a

30 A


31
Q

A type S fuse is installed in an Edison base fuse holder for what primary reason

A

240.53B

Non-interchangeable


32
Q

A grounding electrode conductor may be spliced together by


A

250.8 a4

Exothermic welding

33
Q

What is the smallest size grounded conductor you can run in parallel

A

250.24 c2

1/0

34
Q

The green screw in a main panel enclosure serves as what

A

250.28B

Main bonding jumper

35
Q

High impedance ground systems operate at a minimum of what voltage

A

250.36

480 V

36
Q

A concrete encased electrode with electrically conductive coated steel reinforcing bars shall be at least____ In diameter in a minimum of 20 feet and continuous length 

A

250.52 a31

Half inch

37
Q

What is the minimum size wire for a grounding ring

A

250.52a4

Number 2 copper

38
Q

How many feet of a rod electrode shall be in contact with the earth

A

250.53G

8 feet

39
Q

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

A

250.52. 5B

5/8 of an inch

40
Q

What is the minimum space between ground rods

A

250.53B

6 feet

41
Q

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

A

250.64B

Number six or larger

42
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

250.64E

Grounding electrode conductor

43
Q

What is the minimum size mean bonding jumper for it in 800 Kcmill service entrance conductors

A

250.102.C1
2/0


44
Q

What is the minimum size copper clad grounding electrode conductor needed for a 200 amp single phase dwelling copper feeder

A

310.15 B7
250.66

83% rule

2 awg

45
Q

A fuse shall have a clearing time of

A

240.67
.07 seconds or less

46
Q

Feeders can supply separate buildings/panels load side

Services can be installed underground

225.30

A



Michigan Electrical Journeyman (9 decks)

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