Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Construction safety > electricity second half > Flashcards

electricity second half Flashcards

1
Q

They automatically open circuit if unsafe current is detected.

A

electric protective devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Fuses

A

melt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

breakers

A

flip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

GFCIs

A

Isolate the load

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

GFCI cuts electricity off __ of a second if a ground fault is detected.

A

1/40th

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

GFCI’S should be used on all _____, or have an assured equipment grounding conductor program.

A

120-volt, single phase, 15-20 ampere receptacles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Tripping GFCI’s are designed to trip at____.

A

4-6 milliamps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

GFCI’s are not required on permanent power ________.

A

unless tool used with extension cord

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

GFCI’S or ____ are required for all temporary power during construcution.

A

assured equipment grounding conductor program

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

If a GFCI detects as imbalance as small as ___ it reacts as fast as ___ of a second.

A
  1. 5 milliamps

2. 1/30th of a second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

GFCI is useless if ground prong is____.

A

missing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

GFCI required on generators ____ or greater.

A

5 kW or 5,000 watts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

GFCI can be built in or added as a ____.

A

pig tail

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

All cord sets, recptacles and any equipment connected by cord shall be ______.

A

Inspected before each days use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Must be kept onsite.

A

Written program

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is covered by assured grounding?

A

electric tools/power tools. Cords, plugs, receptacles not part of the building.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Assured Grounding test records are kept by_____.

A

color coding, other means, written log.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

electrical equipment must be inspected____.

A

before insulation and to make sure it is suitable for it’s intended use.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Listed, labeled, or certified equipment must be used _____.

A

Per manufacturer’s instructions

20
Q

All circuit breakers must be_____.

A

labeled

21
Q

Access to live parts 50+ volts must be protected by ___ or ___.

A

restricted areas or physical locations

22
Q

Accessible by only qualified persons. For example a room or a partition, screened area, balcony, platform.

A

restricted areas

23
Q

Elevated 8 feet or more above the floor or working surface.

A

Physical locations

24
Q

Specific written procedures adopted by the employer.

A

Assured Equipment Grounding Program (AEGP)

25
Q

AEGP must be ___.

A

kept onsite

26
Q

Who must implement an AGEP?

A

competent person

27
Q

What is the coverage for Assured grounding?

A

Equipment connected by plug and cord. all cords, plugs, and receptacles and power tools.

28
Q

Assured grounding test records are kept how?

A

by color coding, and other means, and by written log

29
Q

Electrical equipment must be…..

A
  1. Inspected bfore insallation

2. Suitable for the intended use.

30
Q

Listed, labeled, and certified equipment ______.

A

to be used per manufacturer’s instructions

31
Q

All ___ must be labeled.

A

circuit breakers

32
Q

electrical rooms must be____.

A

marked

33
Q

must use splicing devices designed for that purpose (wire nuts) or by brazing, welding, or soldering.

A

splicing conductors

34
Q

manufacturer’s information must be legible. What must be provided?

A

Manufacturer’s name, trade mark, voltage, current, and wattage.

35
Q

Must have access and “elbow room”. Access must be maintained around all electrical equipment. Work spaces clearances are a minimum of ____ in front of elec. equip.

A

3 ft squared

36
Q

Controls on equipment must be _____.

A

lock out/tagged out

37
Q

How do you prevent energizing circuits?

A

Circuits that are de-engerized must be taggedout/lockedout.

38
Q

What must be done to live wires?

A

Insulation

39
Q

Use words that have ____ and are marked for ______.

A

three prongs and that are marked for hard or extra hard usage.

40
Q

Use only cords, connection devices, and fittings equipped with _____.

A

strain relief

41
Q

removed cords by____.

A

pulling on plugs

42
Q

A low-resistence path from a tool to the earth to disperse unwanted current.

A

grounding

43
Q

Energy flows through the ground wire and not you! To the ground protecting you from electrical shock, injury or death.

A

When a short occurs

44
Q

What is the most frequent osha violation?

A

Missing ground on extension cord

45
Q

This situation can cause arching and a fire in the area where the overload exists. Even inside a wall.

A

Overloading circuits

46
Q

They automatically open circuit if unsafe current is detected-they “shut off” electricity.

A

Electric circuit protective devices.

Construction safety (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions