One primary element in an electrically safe work condition is that a _____ must be applied to any circuit part that could become energized prior to work.

One primary element in an electrically safe work condition is that a _____ must be applied to any circuit part that could become energized prior to work.

• A. lockout/tagout device
• B. ground fault circuit interrupter
• C. personal protective equipment
• D. insulated sleeve

Answer: (A)

Before doing electrical work, you must ensure the circuit part that could become energized is de-energized and cannot be turned on again. The most effective way to achieve this is by applying a lockout/tagout device to the energy source. A lock physically holds the equipment in the off position, and a tag communicates that the device must not be operated, often with the worker’s name and date. This provides positive control over the energy source and prevents accidental re-energization while work is being performed, which is the essence of an electrically safe work condition. Ground fault circuit interrupters protect against shock during live conditions but don’t prevent a circuit from becoming energized. Personal protective equipment and insulated sleeves offer protection but do not control energy isolation, so they don’t meet the requirement of ensuring the circuit cannot energize.

Before doing electrical work, you must ensure the circuit part that could become energized is de-energized and cannot be turned on again. The most effective way to achieve this is by applying a lockout/tagout device to the energy source. A lock physically holds the equipment in the off position, and a tag communicates that the device must not be operated, often with the worker’s name and date. This provides positive control over the energy source and prevents accidental re-energization while work is being performed, which is the essence of an electrically safe work condition.

Ground fault circuit interrupters protect against shock during live conditions but don’t prevent a circuit from becoming energized. Personal protective equipment and insulated sleeves offer protection but do not control energy isolation, so they don’t meet the requirement of ensuring the circuit cannot energize.