You must use ladders with nonconductive side rails where the ladder could contact uninsulated, energized electric lines or equipment. Metal ladders or other ladders specifically designed to permit grounding or dissipation of static electricity may be used around high-static electrical fields if all of the following are met:

(1) Using nonconductive ladders would present a greater hazard than using conductive ladders.

(2) Ladders are prominently marked and identified as being conductive.

(3) Ladders are grounded when used near energized lines or equipment.