OSHA Electrical Safety Standards 2

Question 1

Under OSHA's lockout/tagout standard (29 CFR 1910.147), who is authorized to remove a lockout device?

Accepted Answer

The employee who applied it, or per a documented removal procedure if absent

Answer

Only the authorized employee who applied the device removes it, unless a documented procedure allows removal when that employee is unavailable.

Question 2

What is the primary purpose of grounding electrical equipment?

Accepted Answer

To provide a low-resistance path for fault current to safely dissipate

Answer

Grounding creates a low-resistance path that safely carries fault current away, reducing shock and fire risk.

Question 3

A GFCI protects workers primarily by detecting what condition?

Accepted Answer

An imbalance between hot and neutral current (ground fault)

Answer

A GFCI trips when current leaking to ground creates an imbalance between the hot and neutral conductors.

Question 4

OSHA requires that flexible cords and cables be protected from which hazard?

Accepted Answer

Damage from sharp corners, pinching, or vehicle traffic

Answer

Cords must be protected from physical damage such as pinching, sharp edges, and passing traffic.

Question 5

Which condition allows work on energized parts under OSHA rules?

Accepted Answer

When de-energizing introduces greater hazard or is infeasible

Answer

Energized work is only permitted when de-energizing increases hazards or is infeasible for the task.

OSHA Safety Certificate Practice Test