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Safety and Emergency Procedures Flashcards

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

Read the first 7 Safety and Emergency Procedures flashcards as text

  1. What is the minimum depth of burial required by the NEC for direct-buried 120/240V residential service entrance cable (USE-2) with no additional protection?

    Answer: 24 inches

    NEC Table 300.5 requires a minimum burial depth of 24 inches for direct-buried residential service entrance cables without supplemental protection.

  2. A worker receives a severe electrical burn on the hand. After calling 911, what is the correct first aid treatment?

    Answer: Cover the burn loosely with a sterile non-stick bandage and keep the victim warm

    Electrical burns should be covered loosely with a sterile dressing; ice, ointments, or breaking blisters can worsen the injury and increase infection risk.

  3. According to NFPA 70E, who is responsible for identifying, documenting, and labeling arc flash hazards on electrical equipment?

    Answer: The building owner or their designated representative

    NFPA 70E places responsibility for performing arc flash risk assessments and labeling equipment on the owner or operator of the electrical equipment.

  4. In an emergency where a worker's clothing catches fire from an arc flash, what is the correct immediate response?

    Answer: The victim should stop, drop, and roll to smother the flames

    Stop, drop, and roll is the universally recommended technique to smother flames on a person's clothing and body.

  5. Which OSHA standard specifically prohibits working on or near energized parts above 50 volts unless de-energizing creates a greater hazard or is infeasible due to equipment design or operational limitations?

    Answer: 29 CFR 1910.333(a)(1)

    OSHA 29 CFR 1910.333(a)(1) establishes the de-energizing requirement for work on or near parts energized above 50V, with limited exceptions.

  6. A permit-required confined space containing electrical equipment must be monitored for which atmospheric hazard before and during entry?

    Answer: Oxygen deficiency/enrichment, flammable gases, and toxic contaminants

    OSHA 29 CFR 1910.146 requires continuous monitoring of oxygen levels, flammable gas concentrations, and toxic atmospheric contaminants in permit-required confined spaces.

  7. What action must a qualified electrician take before testing a capacitor bank that has been de-energized but not yet discharged?

    Answer: Use an approved discharge resistor or discharge tool and verify zero voltage with a meter

    Capacitors retain lethal stored charge after de-energization; they must be discharged using an approved discharge resistor and then verified at zero voltage with a calibrated meter.