Electrical Safety Standards Flashcards
7 cards from real OSHA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electrical Safety Standards flashcards as text
Under OSHA's lockout/tagout standard (29 CFR 1910.147), who is authorized to remove a lockout device?
Answer: The employee who applied it, or per a documented removal procedure if absent
Only the authorized employee who applied the device removes it, unless a documented procedure allows removal when that employee is unavailable.
What is the primary purpose of grounding electrical equipment?
Answer: To provide a low-resistance path for fault current to safely dissipate
Grounding creates a low-resistance path that safely carries fault current away, reducing shock and fire risk.
A GFCI protects workers primarily by detecting what condition?
Answer: An imbalance between hot and neutral current (ground fault)
A GFCI trips when current leaking to ground creates an imbalance between the hot and neutral conductors.
OSHA requires that flexible cords and cables be protected from which hazard?
Answer: Damage from sharp corners, pinching, or vehicle traffic
Cords must be protected from physical damage such as pinching, sharp edges, and passing traffic.
Which condition allows work on energized parts under OSHA rules?
Answer: When de-energizing introduces greater hazard or is infeasible
Energized work is only permitted when de-energizing increases hazards or is infeasible for the task.
What does the color of an electrical conductor's insulation typically indicate?
Answer: The conductor's function such as hot, neutral, or ground
Insulation color coding identifies conductor function—for example green or bare for ground, white for neutral.
Why must overcurrent protection devices (fuses/breakers) be sized correctly?
Answer: To interrupt current before conductors overheat and cause fire
Properly sized breakers or fuses trip before conductors overheat, preventing fires.