What preliminary steps are necessary before filling a motorhome?

Prior to filling a motorhome with LP gas, it is essential to turn off all electrical circuits and check for leaks to ensure safety during the process. This step minimizes the risk of ignition from electrical sparks that could occur if circuits remain live while potentially flammable gas is being introduced into the vehicle. Additionally, performing a leak check ensures that there are no existing leaks in the gas system that could result in dangerous situations during filling or while the motorhome is in use.

Turning on burners and pilots is not advisable during this process, as they can create flames or heat sources that may ignite the gas. Ensuring all passengers are seated is typically a safety precaution during travel, but it doesn't directly address the safety issues involved in filling the gas tank. Leaving ignition sources on is counterintuitive and presents a significant safety hazard. Hence, the correct focus is on ensuring electrical circuits are off and conducting leak inspections to avoid potential hazards during the gas filling process.