When must qualified personnel wear rubber gloves during energized underground distribution work?

• A. When contact to energized parts in excess of 277 volts to ground is possible
• B. At all times
• C. When contact to energized parts in excess of 600 volts to ground is possible
• D. When qualified personnel deem them necessary

Answer: (B)

The key idea is that insulating rubber gloves are a safety requirement whenever there is any chance of coming into contact with energized parts during energized work. In underground distribution, conditions can change and parts can become energized or accessible unexpectedly, so protection must be in place throughout the entire operation. Wearing the gloves at all times during energized work minimizes the risk of shock or arc exposure, rather than waiting for a certain voltage level or relying on personal judgment.

Remember, gloves must be appropriate for the voltage, inspected before use, and worn with leather protectors for added mechanical protection. If gloves are damaged or contaminated, they should not be used.