Electrical Safety Standards Flashcards

The first step in the lockout/tagout procedure is to:

Answer: Notify affected employees and prepare for shutdown

LOTO begins with preparation and notifying affected employees before shutting down the equipment.

After applying locks in LOTO, why must stored energy be released or restrained?

Answer: Because springs, capacitors, or pressure can still cause injury

Residual stored energy in capacitors, springs, or pressure systems must be released to prevent unexpected release.

A tag used alone (without a lock) provides what level of protection?

Answer: A warning only, with no physical restraint

A tag is only a warning device and does not physically prevent equipment from being energized.

How should a worker verify that equipment is truly de-energized before servicing?

Answer: Test with a properly rated voltage tester (verify tester on known live source first)

Verify zero energy using a rated tester, and confirm the tester works on a known live source before and after.

What is a key requirement for extension cords used on construction sites under OSHA?

Answer: They must be three-wire type (grounded) and rated for hard/extra-hard use

Construction extension cords must be grounded three-wire type rated for hard or extra-hard service.

Metal ladders are discouraged near electrical work because they:

Answer: Conduct electricity and increase electrocution risk

Metal ladders conduct electricity, so non-conductive fiberglass ladders are safer near electrical hazards.

What does 'approach boundary' refer to in electrical safety?

Answer: The distance from energized parts that requires specific protection or authorization

Approach boundaries define distances from live parts where shock protection or qualification is required.