What minimum clearance must be maintained when a crane is in transit under power lines rated at 300kv?

The correct minimum clearance that must be maintained when a crane is in transit under power lines rated at 300 kV is 10 feet. This standard is put in place to ensure safety and prevent electrical accidents when working near high-voltage power lines.

High-voltage lines, such as those rated at 300 kV, can pose significant risks, and the required clearance is designed to minimize those risks by preventing any part of the crane from coming too close to the power lines. The 10-foot clearance is a regulatory requirement in many safety standards, which accounts for the potential for electrical arcs that can occur due to voltage differences.

This standard is reflective of best practices in the industry to protect workers, equipment, and infrastructure from the dangers associated with high-voltage electrical exposure. Understanding and adhering to these clearances is crucial for ensuring the safety of all personnel involved in operations near power lines.