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ElectricityProtective Equipment: Gloves, Arc Flash & Climbing Gear
Twenty flashcards on the protective equipment of line work: rubber glove classes and tests, arc-rated clothing, live-line tools and fall gear.
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20 cards
- What classes of rubber insulating equipment does OSHA list?
- Class 00, 0, 1, 2, 3 and 4, and each item must be marked with its class.
- What is the maximum use voltage of Class 00 rubber insulating equipment?
- 500 volts ac rms.
- What is the maximum use voltage of Class 0 equipment?
- 1,000 volts ac rms.
- What is the maximum use voltage of Class 4, the highest class?
- 36,000 volts ac rms.
- When must rubber insulating gloves be inspected?
- Before each day's use and right after any incident that may have damaged them, with an air test.
- Which defects take rubber insulating equipment out of use?
- A hole, tear, puncture or cut; ozone cracking; an embedded object; or rubber that swells, softens, hardens or turns sticky.
- How often must rubber insulating gloves be electrically tested?
- Before first issue and every 6 months after that.
- How often must rubber insulating sleeves and blankets be electrically tested?
- Before first issue and every 12 months after that.
- What is worn over rubber insulating gloves?
- Protector gloves, except in a few limited-use cases that need high finger dexterity.
- Can insulating gloves used without protector gloves go straight back into service?
- No. They may not be reused until they have been tested.
- If a worker uses rubber insulating gloves as insulation, what else is normally required?
- Rubber insulating sleeves, unless nearby energized parts are covered and the cover was installed from a safe position.
- Within reach of energized parts, what conductive articles must a worker remove or make nonconductive?
- Keychains, watch chains, rings, wrist watches or bands, unless they do not add to the hazard.
- What two arc-flash steps must the employer take first?
- Assess the workplace to find workers exposed to flames or arcs, and make a reasonable estimate of their incident heat energy.
- Which fabrics are banned for workers exposed to flames or arcs, unless treated or worn safely?
- Acetate, nylon, polyester, rayon and polypropylene, alone or in blends.
- Above what estimated incident energy must arc-rated protection cover the whole body?
- Above 2.0 cal/cm2, with an arc rating equal to or greater than the estimate.
- When are arc-rated gloves not needed on the hands?
- With rubber insulating gloves and protectors, or up to 14 cal/cm2 with heavy-duty leather gloves of at least 407 gm/m2 (12 oz/yd2).
- Which document heads OSHA's list of methods to estimate arc heat energy?
- NFPA 70E-2012, Annex D; OSHA lists several methods and endorses none of them.
- What must be done with each live-line tool before use each day?
- Wipe it clean and visually inspect it for defects.
- How often must live-line tools used for primary protection come out of service for examination and testing?
- Every 2 years, and whenever a defect or contamination is found.
- Since April 1, 2015, how far may a worker free fall in a work-positioning system?
- No more than 0.6 meters (2 feet).
Official sources
Occupational Safety and Health Administration (OSHA), via GovInfo (GPO)
29 CFR 1910.137: Electrical protective equipment (CFR 2025 edition)
Occupational Safety and Health Administration (OSHA), via GovInfo (GPO)
29 CFR 1910.269: Electric power generation, transmission, and distribution (CFR 2025 edition)
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