What must mobile cranes be when operated near energized equipment?

Mobile cranes must be effectively grounded when operated near energized equipment because grounding significantly reduces the risk of electrical shock and electrocution. Effective grounding ensures that any stray voltage is directed safely to the ground, thereby protecting operators and workers nearby from the dangers of electrical hazards. This is particularly important around energized tools or equipment where accidental contact may occur.

While ensuring cranes are powered off, independently secured, or considered out of service are important safety protocols in various situations, they do not specifically address the unique hazards posed by working near energized equipment. Grounding is a critical safety measure in these circumstances and is essential for preventing electrical accidents.