Electrical Safety Standards Flashcards

A 'qualified person' for electrical work under OSHA is one who:

Answer: Has training to recognize and avoid electrical hazards and construct/operate the equipment

A qualified person has the training and skills to recognize hazards and safely work on the specific equipment.

Which PPE is specifically designed to protect against electrical shock when handling live conductors?

Answer: Rated insulating rubber gloves with leather protectors

Voltage-rated insulating rubber gloves, worn with leather protectors, guard against shock during live work.

Temporary wiring on a job site must be:

Answer: Removed when the temporary need ends

OSHA requires temporary wiring to be removed once its temporary purpose is complete.

Why is it dangerous to remove the grounding prong from a three-prong plug?

Answer: It defeats the equipment ground, leaving no safe path for fault current

Removing the ground prong eliminates the fault-current path, exposing the user to shock if a fault occurs.

What is the main danger of overloaded circuits?

Answer: Overheating of conductors leading to fire

Overloaded circuits overheat conductors and can ignite surrounding materials, causing fires.

When working near overhead power lines, a crane operator must maintain:

Answer: A minimum approach distance based on line voltage

OSHA requires minimum clearance distances from overhead lines that increase with voltage.

The safest response to a small electrical fire in energized equipment is to:

Answer: De-energize if safe and use a Class C rated extinguisher

Class C extinguishers are rated for energized electrical fires; water conducts electricity and must be avoided.