Practice Test Geeks(PC) Professional Electrical Contractor Practice Test
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OSHA Safety Standards Flashcards

7 cards from real PC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 OSHA Safety Standards flashcards as text

  1. Under OSHA 29 CFR 1926.403(i), what is the maximum voltage permitted for temporary lighting used on construction sites without special guarding?

    Answer: 120V

    Temporary lighting on construction sites must not exceed 120V unless the luminaire is protected from breakage.

  2. OSHA defines an 'authorized employee' under the lockout/tagout standard as someone who:

    Answer: Locks out or tags out machines to perform servicing or maintenance

    An authorized employee is the worker who actually applies the lockout/tagout device to control hazardous energy.

  3. When using a scaffolding system near energized power lines, OSHA 29 CFR 1926.451 requires scaffolds to be erected at least how far from lines rated 300V to 50kV?

    Answer: 10 feet

    Scaffolds must be kept at least 10 feet from power lines rated between 300V and 50kV per OSHA's scaffold standard.

  4. An electrician is exposed to a substance listed as an OSHA-regulated carcinogen. Per 29 CFR 1910.1003, what is the minimum retention period for exposure records?

    Answer: 30 years

    OSHA requires employee exposure records for regulated carcinogens to be retained for at least 30 years.

  5. Under OSHA's ground fault protection requirements for construction (29 CFR 1926.404(b)), which device must be used on all 120V, 15A and 20A temporary receptacle circuits?

    Answer: Ground fault circuit interrupter (GFCI)

    OSHA requires GFCI protection on all 120V, single-phase, 15A and 20A temporary power outlets at construction sites.

  6. What is the OSHA-required minimum width of access and egress for electrical equipment rooms containing equipment rated over 1200A and over 6 feet wide?

    Answer: 36 inches

    OSHA (and NEC 110.26) requires a minimum 36-inch working space clearance in front of high-amperage electrical equipment.

  7. Per OSHA 29 CFR 1926.417, which action is required after a worker locks out equipment and before beginning work?

    Answer: Attempt to operate the equipment to verify de-energization

    OSHA requires workers to attempt to operate the equipment's normal controls after lockout to verify that it is actually de-energized.