An Electric Pallet Jack operator should install to support a semi-trailer that is not coupled to a tractor to prevent it from upending.?

An Electric Pallet Jack operator should use wheel chocks to secure the semi-trailer and prevent it from rolling or upending while it is not coupled to a tractor. Additionally, the operator should engage the trailer's brakes if available and ensure the pallet jack is positioned properly to distribute weight evenly. It’s crucial to follow safety protocols and guidelines to maintain stability during loading or unloading operations.