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
Same light fixtures are center mounted on a threaded metal tube called a?
Nipple
26
The size of the service entrance conductors depends on what?
Electrical load
27
What is the minimum # of general purpose 120v/15a circuits allowed in a dwelling that measures 45x85?
7
28
A hallway is required to have a receptacle if it is as least how many feet in length
10ft
29
There are two way power is brought to a building what are they?
Over head / underground
30
Underground service entrance conductors that run through a metal conduit this conduit is called a
Mast
31
Over head service entrance conductors are through a metal conduit to the SEP this conduit is called a
Riser
32
What is a bonding screw or clamp used for?
Bonding the panel to the ground
33
The power company needs how many feet of conductor hanging out the service head to hook to there drop wires
3 to 4ft
34
Another name for a weather head
Service head
35
Romex shall be installed so no bend will have a radius less than__times the diameter of the cable
5 article 334.24
36
Where rock bottom is encountered, a ground rod may be buried in a trench at least_____feet deep
2 1/2 article 250.53(G)
37
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
6 article 210.52(A)
38
What is an individual circuit?
One set of power to one set of equipment
39
Edison based plug fuses shall not be rated more than___amps
30 article 240.51(A)
40
What are three most common symbols found on a blue print
Ceiling outlet Switch Duplex receptacle
41
Non-metallic sheathed cable come in what wire size
14 thru 2 copper 12 thru 2 aluminum Article 334.104
42
A #12 AWG has a cross sectional area of_____circular mills.
6530 article chapter 9 and 8
43
When using type THHW conductors rated for 75c, what types of locations can this conductor be used in
Wet locations
44
The best meter for locating the common terminal on a 3-way switch is the
Ohm meter
45
A garbage disposal located in a dwelling unit shall be equipped with a cord that does not exceed___in length
36in
46
To used a standard duplex receptacle in a split wired circuit you must do what to it
Break the hot tie bar
47
Service drops must clear the ground by not less than how many feet
10 feet
48
The NEC states that for you climb over obstacles to get to and electrical device, it's not?
Readily accessible
49
A lighting and appliance panel bored shall not have more than___over current protection devices (breakers) in the panel
42
50
The size of the service entrance conductors depends on what
Electrical load
51
In a switch loop arrangement the power from the source enters
The lighting fixture box first
52
Receptacles in the dining room are connected to a?
Small appliance circuit
53
If two 3 way switches and three 4 way switches are being used to control lights they are controlled from___locations
5
54
Dimmer switches are used to vary the?
Intensity of a light
55
The rating of cord and plug utilization equipment connected to a 20-amp branch circuit that also supplies lighting units shill not exceed?
16amps
56
A photocell type switch is used to do what?
Automatically turn lights on and off
57
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?
1.5
58
The unit lighting load for a dwelling unit is expressed as?
3 va per square foot
59
The main purpose of a GFCI is to?
Protect people
60
What happens to the ampacity of stranded conductors when some strands break off or are cut off?
Conductor ampacity is reduced when strands are reduced
61
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
5
62
The types of non-metallic sheathed cable designations are?
NM,NMS,NMC
63
A cable ripper is used for?
Ripping cable
64
According to table 310.104 (A), THH wire can be used in?
Dry and damp locations