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Phase2 > Phase 2 > Flashcards

Phase 2 Flashcards

1
Q

Current capacities for conductors are given in electric units called?

A

Amps

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2
Q

Wiggy is used to check for continuity?

A

No only voltage

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3
Q

What instrument would you use to do resistance?

A

Ohm meter

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4
Q

What are the accessories of a csr/psr?

A

A run cap and a start cap

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5
Q

What happens in a series circuit to voltage and current?

A

Voltage divides and current remains the same

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6
Q

If two 60 watt light bulbs are wired in series, what will happen?

A

Each bulb will produce less light

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7
Q

What would the maximum ampacity of a plug fuse be if the fuse had a hexagonal window on the fuse?

A

15 amps

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8
Q

On Romex cable marked 14/3 wg, what do these numbers and letters mean?

A

14/ gauge
2 conductors
1 ground

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9
Q

What are the three most common symbols found on a blueprint?

A

Ceiling outlet,
Switch,
Duplex receptacle

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10
Q

When using aluminum wire instead of copper, a #12 AWG copper conductor would have to be replaced with what size aluminum conductor?

A

10 gauge

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11
Q

What are the minimum copper wire and circuit breaker sizes allowed in a dwelling?

A

14 gauge @ 15amps

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12
Q

Electric wire sizes are expressed in:

A

AWG

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13
Q

What is the rule of thumb for a neutral conductor?

A

Neutral is always white but white is not always neutral

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14
Q

What or who, determines the circuit breaker size needed to protect a circuit?

A

Wire size

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15
Q

The current capacity of a conductor depends on two things. What are they?

A

Wire size and material it’s made of

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16
Q

When using aluminum conductors in place of copper conductors, the aluminum conductors must be sized how many trade sizes larger then copper conductor?

A

One trade size larger

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17
Q

A safety device which automatically shuts off power in the event of an overload or short, and can be reset is called?

A

Circuit breaker

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18
Q

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

A

The switch

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19
Q

The N E C requires that you have a minimum of how many small appliance circuits?

A

Two

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20
Q

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

A

12 AWG @20 amps

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21
Q

On a separate 120v/20amp laundry room circuit what other loads are allowed?

A

Any receptacle in the room

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22
Q

How many loads can yon have on a 15amp general purpose lighting circuit according to the N E C?

A

There is no max

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23
Q

A meter shunt is?

A

Wired around the water meter

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24
Q

When the power company installs their triplex cable there is a bare conductor, what is this conductor called?

A

Messenger

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25
Q

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

A

Nipple

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26
Q

The size of the service entrance conductors depends on what?

A

Electrical load

27
Q

What is the minimum # of general purpose 120v/15a circuits allowed in a dwelling that measures 45x85?

A

7

28
Q

A hallway is required to have a receptacle if it is as least how many feet in length

A

10ft

29
Q

There are two way power is brought to a building what are they?

A

Over head / underground

30
Q

Underground service entrance conductors that run through a metal conduit this conduit is called a

A

Mast

31
Q

Over head service entrance conductors are through a metal conduit to the SEP this conduit is called a

A

Riser

32
Q

What is a bonding screw or clamp used for?

A

Bonding the panel to the ground

33
Q

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

A

3 to 4ft

34
Q

Another name for a weather head

A

Service head

35
Q

Romex shall be installed so no bend will have a radius less than__times the diameter of the cable

A

5 article 334.24

36
Q

Where rock bottom is encountered, a ground rod may be buried in a trench at least_____feet deep

A

2 1/2 article 250.53(G)

37
Q

Receptacles in the living room of a dwelling shall be so spaced that there is no more than____feet from any point along the wall to a receptacles

A

6 article 210.52(A)

38
Q

What is an individual circuit?

A

One set of power to one set of equipment

39
Q

Edison based plug fuses shall not be rated more than___amps

A

30 article 240.51(A)

40
Q

What are three most common symbols found on a blue print

A

Ceiling outlet
Switch
Duplex receptacle

41
Q

Non-metallic sheathed cable come in what wire size

A

14 thru 2 copper
12 thru 2 aluminum
Article 334.104

42
Q

A #12 AWG has a cross sectional area of_____circular mills.

A

6530 article chapter 9 and 8

43
Q

When using type THHW conductors rated for 75c, what types of locations can this conductor be used in

A

Wet locations

44
Q

The best meter for locating the common terminal on a 3-way switch is the

A

Ohm meter

45
Q

A garbage disposal located in a dwelling unit shall be equipped with a cord that does not exceed___in length

A

36in

46
Q

To used a standard duplex receptacle in a split wired circuit you must do what to it

A

Break the hot tie bar

47
Q

Service drops must clear the ground by not less than how many feet

A

10 feet

48
Q

The NEC states that for you climb over obstacles to get to and electrical device, it’s not?

A

Readily accessible

49
Q

A lighting and appliance panel bored shall not have more than___over current protection devices (breakers) in the panel

A

42

50
Q

The size of the service entrance conductors depends on what

A

Electrical load

51
Q

In a switch loop arrangement the power from the source enters

A

The lighting fixture box first

52
Q

Receptacles in the dining room are connected to a?

A

Small appliance circuit

53
Q

If two 3 way switches and three 4 way switches are being used to control lights they are controlled from___locations

A

5

54
Q

Dimmer switches are used to vary the?

A

Intensity of a light

55
Q

The rating of cord and plug utilization equipment connected to a 20-amp branch circuit that also supplies lighting units shill not exceed?

A

16amps

56
Q

A photocell type switch is used to do what?

A

Automatically turn lights on and off

57
Q

When referring to the number of wires permitted in a box, when different sizes of wire are in the box, the cubic inch rating of a #18 AWG is?

A

1.5

58
Q

The unit lighting load for a dwelling unit is expressed as?

A

3 va per square foot

59
Q

The main purpose of a GFCI is to?

A

Protect people

60
Q

What happens to the ampacity of stranded conductors when some strands break off or are cut off?

A

Conductor ampacity is reduced when strands are reduced

61
Q

When wiring In a dwelling using a 4 x 1 1/2 octagonal box for fastening the light, the number of #14 AWG conductors would have to be reduced to____if the box contained a fixture stud and cable clamp

A

5

62
Q

The types of non-metallic sheathed cable designations are?

A

NM,NMS,NMC

63
Q

A cable ripper is used for?

A

Ripping cable

64
Q

According to table 310.104 (A), THH wire can be used in?

A

Dry and damp locations

Phase2 (1 decks)

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