CSS Electrical Safety and LOTO 3

Question 1

What voltage threshold does OSHA define as 'high voltage' for construction electrical work under 29 CFR 1926?

Accepted Answer

Over 600 volts

Answer

OSHA 29 CFR 1926 Subpart K defines high voltage as exceeding 600 volts, which triggers additional safety requirements.

Question 2

According to NFPA 70E, an arc flash hazard analysis must be updated when?

Accepted Answer

Whenever a major modification or renovation of the electrical system occurs

Answer

NFPA 70E requires arc flash hazard analysis to be reviewed and updated when a major modification or renovation occurs, or at intervals not exceeding 5 years.

Question 3

What color is OSHA's required safety color for electrical hazard warnings?

Accepted Answer

Orange

Answer

Orange is the OSHA-designated safety color for indicating dangerous parts of machines or energized equipment that may cut, crush, shock, or otherwise injure.

Question 4

A qualified electrical worker is defined by OSHA as someone who:

Accepted Answer

Has training on hazards and construction or maintenance of electrical equipment they work on

Answer

OSHA defines a qualified person as one who has received training in avoiding electrical hazards and the specific construction/operation of equipment they service.

Question 5

What is the minimum approach distance concept used to protect workers from energized electrical equipment?

Accepted Answer

The closest distance a worker may approach energized conductors without additional protection

Answer

Minimum approach distance (MAD) establishes the closest point a qualified worker may safely approach energized conductors, determined by voltage level.

(CSS) Certified Safety Supervisor Practice Test

(CSS) Certified Safety Supervisor Practice Test

CSS Electrical Safety and LOTO 3