What is the procedure for properly grounding a piece of heavy equipment during electrical storm conditions?

The primary recommendation during electrical storm conditions is to cease operation of heavy equipment and seek shelter in a safe location. There is no practical method for 'grounding' heavy equipment to protect it or its operator from a direct lightning strike. Grounding, in electrical terms, provides a path for current to flow safely to the earth in the event of a fault. However, the immense energy of a lightning strike would overwhelm any grounding system on heavy equipment. If operating heavy equipment during an electrical storm, the operator should immediately stop work and follow these steps: If possible, move the equipment to a pre-designated safe area away from other equipment, structures, and personnel. Lower any raised components, such as booms or buckets, to the ground. If the equipment has an enclosed cab, the operator should remain inside with the doors and windows closed. The metal cab may offer some protection by acting as a Faraday cage, which can help to dissipate electrical current around the outside of the cab rather than through it. Avoid contact with any metal surfaces inside the cab. If the equipment does not have an enclosed cab, the operator should seek shelter in a nearby building or vehicle. Stay away from the equipment and any nearby metal objects during the storm. Wait at least 30 minutes after the last thunder is heard before resuming work. For example, if a bulldozer is operating in an open field and lightning is observed, the operator should immediately lower the blade, shut off the engine, and seek shelter in a nearby building, or if no building is available, remain in the enclosed cab. Attempting to 'ground' the equipment with chains or cables is ineffective and could be dangerous.