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Final Flashcards

(72 cards)

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1
Q

What does NEMA stand for?

A

National electrical manufacturers association

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2
Q

What does IEC stand for?

A

International electro technical commission

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3
Q

What does NEC stand for?

A

National electric code

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4
Q

What does UL stand for?

A

Underwriters laboratory

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5
Q

What does GFCI stand for?

A

Ground fault circuit interrupter

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6
Q

What does AFCI stand for?

A

Arch fault circuit Interruptor

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7
Q

What do we make a motor run?

A

Motor starter

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8
Q

On 2 start stop stations wired together how are the start and stop buttons wired?

A

Start buttons are wired in parallel and the stop buttons are wired in series

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9
Q

How many overloads are on a 3 phase motor starter?

A

3 overloads

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10
Q

What kind of buttons are E-stops?

A

Maintained

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11
Q

What kind of buttons are start buttons?

A

Momentary

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12
Q

Instead of a 3 bend saddle what can we use in conduit?

A

2 offsets back to back

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13
Q

How many 90s can you have in a row in conduit?

A

3

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14
Q

What should you always check for when trouble shooting?

A

Source voltage

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15
Q

What should you read when megging phase to phase?

A

0.0

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16
Q

What should you read megging phase to ground?

A

.5 with 550 being a perfect reading

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17
Q

How do you change direction in a DC motor?

A

Switch polarity

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18
Q

What single phase motor needs a boost to start?

A

Single phase capacitor start

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19
Q

What do we use to make a permanent connection in a motor?

A

Split bolts or ring terminals

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20
Q

What should you read hot bus to hot bus in a load center?

A

240 vac

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21
Q

What does SPST stand for?

A

Single pole single throw

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22
Q

What does DPDT stand for?

A

Double pole double throw

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23
Q

How many sign waves are in a 3 phase motor?

A

3

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24
Q

How many degrees are the sign waves away from each other?

A

120 degrees

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25
What configuration do we wire anything under 20 HP?
Y connection
26
What configuration do we wire anything over 20 HP?
Delta
27
If you read 18 volts or something low on a circuit what are you reading?
Ghost voltage
28
When is eddy current a good thing?
On an inductive proximity switch
29
What is the water tight fitting that's screwed into a box?
Meyers hub
30
2 types of AC voltage?
Single and 3 phase
31
When touching meter leads together what are you reading?
Continuity
32
What does a red box indicate?
480 vac
33
What does a black box indicate?
250 vdc
34
What does a black and yellow striped box indicate?
250 DC cranes
35
What does a grey box indicate?
120/240 vac
36
In a series circuit what does voltage and amps do?
Voltage drops, amps stay the same
37
What does current and voltage do in a parallel circuit?
Current drops and voltage stays the same
38
How are lights wired in a circuit?
In parallel
39
What do we call it when you have a lot of grounds?
Clean power
40
Which side of the GFCI do we protect out of?
The load side
41
What wire goes to the silver screw on a receptacle?
White (neutral)
42
What wire goes to the gold screw on a receptacle?
Black (hot)
43
What wire never goes to a switch?
Neutral
44
What should you read phase to ground on a 3 phase disconnect?
277 vac
45
With your meter in OHMS, what should you read phase to phase?
1 or above
46
What symbol represents OHMS?
Omega symbol
47
What is voltage measured in?
Volts
48
What is current measured in?
Amps
49
What is resistance measured in?
Ohms
50
What state is a stop button always in?
Normally closed
51
What phase is a control transformer?
Single phase
52
What is wired into a motor if it is needed to be ran in auto?
A selector switch
53
What is used in a motor starter to tell you that the motor is running?
A pilot light
54
How many receptacles can be on a 20 AMP breaker?
10
55
Lights get wired with what gauge wire?
14
56
Receptacles get wired with what gauge wire?
12
57
After changing a motor out what should you always do?
Bump test
58
3 types of motors?
Single, 3 phase and DC
59
What is the initial surge of current to get a motor started?
In rush current
60
What does FLA stand for?
Full load amps
61
The size of the starter is determined by what of the motor?
Horse power
62
What is it referred to when a capacitor is discharged in a motor?
Shortage
63
What can we add for multiple connections in a load center?
Terminal strip
64
What 3 things make up an electrical circuit?
Source voltage, switches and a load
65
Anything over 120 volts what ppe do you have to wear?
Arch flash gear
66
What is the voltage supplied to a control transformer?
480 VAC
67
Wearable part of a DC motor?
Brushes
68
What does a megger read on a motor?
The insulation value
69
What does colored wire indicate in a motor starter bucket?
Control voltage
70
What does a DC motor act as with no power applied?
A generator
71
What protects the secondary side of a control transformer?
A control fuse
72
What is wired into a circuit to supply power to something else?
A control relay

Electric (1 decks)

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