Before touching wires, turn off the RV breaker and unplug shore power. Use a voltage tester, green means safe, red and beeping means power is still active.
Always start by turning off the breaker inside the RV and unplugging from shore power. Use a voltage testing pen to confirm no current remains in the line before working. This prevents shock when handling WGO connectors or touching the main wiring harness.
Do you still have to turn off the breaker if the shore power is unplugged?
Yes, you still want to flip the breaker off because even if you pull the shore plug, there can still be a little leftover power hanging around from the RV’s own battery system and it’s not worth finding out the hard way.
How do you turn off the breaker?
You open the RV’s breaker panel, find the switch labeled “main” or the one for the air conditioner, and flip it to the opposite side so it clicks off and the lever isn’t lined up with the others anymore.
What if it still says not safe to work after unplugging and turning off the breaker?
Then there’s still live power somewhere in the system, so stop and check that the generator is off, the inverter is off, and the battery disconnect switch is pulled before you test it again.
