Nabcep 3.1 - Working Safely With Pv Systems

Front 1

What amount of current can paralyze or freeze muscles?

Back 1

10 mA

Front 2

What amount of current can cause a rapid, ineffective heartbeat, and possibly result in death?

Back 2

75 mA

Front 3

What are the minimum and maximum heights of top guardrails used to protect open sided platforms and guardrails?

Back 3

39 to 45 inches

Front 4

What is the required height of toe boards on guardrails?

Back 4

3-1/2 inches

Front 5

What is the maximum distance below a working area for safety nets?

Back 5

30 feet

Front 6

What is the required distance between cleats / rungs / steps on a ladder

Back 6

10 to 14 inches

Front 7

Two or more ladders are required for entering and exiting a building if there are ___ or more workers

Back 7

25

Front 8

What is the rise : run ratio of a ladder?

Back 8

4 : 1

Front 9

What is the distance above the landing that a ladder must extend?

Back 9

3 feet

Front 10

If a ladder is over ___ in height, additional safety precautions must be taken.

Back 10

24 feet

Front 11

On tall ladders, what is the maximum distance between rest platforms?

Back 11

150 feet

Front 12

What is the maximum length of individual ladder sections when multiple sections are used?

Back 12

50 feet

Front 13

If an employer has ___ or more employees, records of occupational injuries / illnesses must be maintained.

Back 13

11 employees

Front 14

Within how many hours must a report be filed with OSHA after a fatality or hospitalization of 3 or more employees?

Back 14

8 hours

Front 15

What part of the CFR Safety and Health Regulations pertains to General Health and Safety Provisions?

Back 15

Subpart C

Front 16

What part of the CFR Safety and Health Regulations pertains to Occupational Health and Environmental Controls?

Back 16

D

Front 17

What part of the CFR Safety and Health Regulations pertains to Personal Protective and Live Saving Equipment?

Back 17

E

Front 18

What part of the CFR Safety and Health Regulations pertains to Tools (Hand and Power)?

Back 18

I

Front 19

What part of the CFR Safety and Health Regulations pertains to Electrical?

Back 19

K

Front 20

What part of the CFR Safety and Health Regulations pertains to Fall Protection?

Back 20

M

Front 21

On tall ladders, what is the maximum distance between rest platforms?

Back 21

150 feet

Front 22

What is the maximum length of individual ladder sections when multiple sections are used?

Back 22

50 feet

Front 23

If an employer has ___ or more employees, records of occupational injuries / illnesses must be maintained.

Back 23

11 employees

Front 24

Within how many hours must a report be filed with OSHA after a fatality or hospitalization of 3 or more employees?

Back 24

8 hours

Front 25

What part of the CFR Safety and Health Regulations pertains to General Health and Safety Provisions?

Back 25

Subpart C

Front 26

What part of the CFR Safety and Health Regulations pertains to Occupational Health and Environmental Controls?

Back 26

Subpart D

Front 27

What part of the CFR Safety and Health Regulations pertains to Personal Protective and Live Saving Equipment?

Back 27

Subpart E

Front 28

What part of the CFR Safety and Health Regulations pertains to Tools (Hand and Power)?

Back 28

Subpart I

Front 29

What part of the CFR Safety and Health Regulations pertains to Electrical?

Back 29

Subpart K

Front 30

What part of the CFR Safety and Health Regulations pertains to Fall Protection?

Back 30

Subpart M

Front 31

What part of the CFR Safety and Health Regulations pertains to Stairways and Ladders?

Back 31

Subpart X

Front 32

Which class of hard hats provides good impact protection, but limited voltage protection?

Back 32

Class A

Front 33

Which class of hard hats provides good impact / shock / burn protection?

Back 33

Class B

Front 34

Which class of hard hats provides limited protection from bumps from fixed objects, and none from falling objects?

Back 34

Class C

Front 35

Which class of hard hats is optimal for construction?

Back 35

Class A

Front 36

Which class of hard hats is optimal for utility?

Back 36

Class B

Front 37

Which class of hard hats is the most comfortable?

Back 37

Class C

Front 38

What are the four types of electrical injuries?

Back 38

1. Electrocution
2. Shock
3. Burns
4. Falls due to electrical shock

Front 39

Severity of the shock depends on what three things?

Back 39

1. Path of current
2. Amount of current
3. Duration of exposure

Front 40

What are four ways to protect workers from electrical shock?

Back 40

1. Use barriers and guards to prevent passage through areas of exposed energized equipment
2. Pre-plan work
3. Post hazard warnings and protective measures
4. Keep working spaces and walkways clear of cords

Front 41

What are three responsibilities of the employer regarding PPE?

Back 41

1) Assessing the workplace for hazards
2) Providing PPE and determining when to use it
3) Providing PPE training

Front 42

What are two responsibilities of the employee regarding PPE?

Back 42

1) Using PPE in accordance with training
2) Daily inspection and maintenance of PPE

Front 43

What does OSHA stand for?

Back 43

Occupational Safety and Health Administration

Front 44

What volume of the US Code of Federal Regulations is OSHA contained in?

Back 44

Volume 29

Front 45

Who does OSHA apply to?

Back 45

Private employers and general industry for construction, maritime, agricultural, and other occupations

Front 46

What does 29 CFR stand for?

Back 46

Volume 29 of the US code of Federal Regulations.

Front 47

What part of 29 CFR refers to general safety and health provisions?

Back 47

Subpart C

Front 48

What part of 29 CFR refers to occupational health and environmental control?

Back 48

Subpart D

Front 49

What part of 29 CFR refers to personal, protective, and life saving equipment?

Back 49

Subpart E

Front 50

What part of 29 CFR refers to tools, hand and power?

Back 50

Subpart I

Front 51

What part of 29 CFR refers to electrical?

Back 51

Subpart K

Front 52

What part of 29 CFR refers to fall protection?

Back 52

Subpart M

Front 53

What part of 29 CFR refers to stairways and ladders?

Back 53

Subpart X

Front 54

Electrical accidents are caused by a combination of what three factors?

Back 54

1) Unsafe equipment and / or installation
2) Workplace made unsafe by the environment
3) Unsafe work practice

Front 55

What are the 4 main types of electrical industries?

Back 55

1) Electrocution (death by electric shock)
2) Electrical shock
3) Electrical burns
4) Fall due to electrical shock

Front 56

What does PPE stand for?

Back 56

Personal Protective Equipment

Front 57

What type of cord for temporary use on a construction site must be used?

Back 57

3 wire type w/ ground, designed for hard or extra hard use.

Front 58

What are lockout tags used for?

Back 58

Preventing individuals from energizing electrical circuits while they are being serviced.

Front 59

Define lockout.

Back 59

Physical lockout of the power source disconnect with a padlock in the off (or open) position.

Front 60

Definte tagging.

Back 60

Labeling of deactivated controls, de-energized equipment, and circuits at all points where they can be energized, and must identify equipment or circuits being worked on.

Front 61

What is the leading cause of death in the construction industry?

Back 61

Falls

Front 62

What does PFAS stand for?

Back 62

Personal Fall Arrest System

Front 63

What is the allowable variation between stair tread height and depth?

Back 63

4 inches

Front 64

What type of guardrail system is used on unprotected sides of landings?

Back 64

42 inch guardrail system

Front 65

If a door or gate opens directly on a stairway, a platform must be used that extends how many inches beyond the swing of the door?

Back 65

20 inches

Front 66

Stairways with four or more risers, or higher than ___ inches, must be equipped with at least one handrail.

Back 66

30 inches

Front 67

OSHA requires that a stairway or ladder be used at points of access where there is an elevation break of ___ inches or more on a jobsite.

Back 67

19 inches

Front 68

What article is relative to working spaces in the NEC?

Back 68

Article 110.26

Front 69

What is the first priority when locating BOS components?

Back 69

Proper working clearances

Front 70

For voltages between 150V and 600V, what is the required clearance width for working space?

Back 70

The width of the equipment or 30 inches, whichever is more

Front 71

Electric arcs can reach what kinds of temperatures in 1/2"?

Back 71

10,000 degrees.

Front 72

In a battery, why does hydrogen tend to accumulate at the top of the battery container?

Back 72

Hydrogen is lighter than air.

Front 73

What happens when the hydrogen concentration becomes to high?

Back 73

The battery becomes explosive

Front 74

Where in the NEC does it state that all battery locations must provide ventilation?

Back 74

Article 480.9

Front 75

Why can't battery containers have vents at the bottom?

Back 75

Acid containment is another requirement

Front 76

As per the NEC,what is the smallest the DC grounding electrode can be?

Back 76

250.166 - the DC grounding electrode can be no smaller than the largest ungrounded DC conductor or 8 AWG

Front 77

When the GEC is connected to a ground rod, what is largest the GEC can be?

Back 77

NEC 250.166 - Copper

Front 78

What section in the NEC covers grounding for DC systems?

Back 78

NEC 250.160-250.169

Front 79

For a PV circuit, how do you size the EGC?

Back 79

The PV EGC should be sized to the rating of the PV circuit overcurrent device in accordance with table 250.122

Front 80

If you have a PV circuit where overcurrent protection is not provided as permitted in 690.9, what should be used to size the EGC?

Back 80

Use Isc in accordance with 250.122

Front 81

What is required when you have an exposed EGC that is smaller than #6?

Back 81

EGC must be installed in a raceway.

Front 82

Stairway landings must be at every ___ feet of vertical rise.

Back 82

12 feet.