Why is grounding or bonding with electrical loads critical when near energized lines?

• A. To improve lift speed
• B. To reduce visibility
• C. To maintain safe electrical clearances by grounding and de-energizing lines when possible
• D. To avoid mechanical wear

Answer: (C)

When working near energized lines, safety hinges on controlling electrical potentials and giving fault energy a safe path. Grounding provides a low-impedance path to earth for any stray or fault current, keeping the crane, load, and other conductive parts at earth potential and reducing the chance of shock or arcing. Bonding ties all exposed metal together so there’s no dangerous voltage difference between components that someone might touch. Whenever possible, de-energizing the lines removes the live voltage altogether, making the area safe to work. Together, grounding and de-energizing lines establish safe electrical clearances by preventing energization of the equipment and ensuring any fault current trips protective devices quickly. The other options don’t address electrical hazards around live lines.