FG Wilson
Downstream Short Circuit or Ground Fault
Generator output breaker trips immediately when load is applied
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted load cable, Faulty load equipment, Incorrect breaker rating or settings, Moisture in load distribution panel
How to Fix / Troubleshooting
Safety first: Open all breakers and isolate the generator. Only qualified personnel should work on live power circuits.
- Test with no load: Start the generator with its main breaker open. If it runs normally, the fault is downstream.
- Inspect load circuits: Check load panels and cables for visible damage or moisture.
- Isolate loads: Close the generator breaker with all downstream breakers open, then energize load circuits one by one to identify the faulty circuit.
- Repair faulty circuit: Once identified, repair or replace damaged cables or equipment before reconnecting.
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Repair Difficulty
Hard
4/5
Required Part
Generator Main Circuit Breaker
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