Honda
Intermittent Overload or Short
Generator runs but trips its main breaker intermittently
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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
Loose or damaged load wiring, Intermittent short in branch circuit, Overloaded phase on multi-phase system, Weak or failing main breaker
How to Fix / Troubleshooting
Safety first: Open the generator main breaker and building main/transfer switch. Verify circuits are de-energized before inspection.
- Check breaker rating: Confirm the main breaker rating matches the generator's rated output.
- Inspect wiring: Look for damaged insulation, pinched cables, or loose lugs at the generator output and ATS.
- Isolate circuits: Have an electrician selectively disconnect branch circuits to identify which load causes the trip.
- Replace weak breaker: If trips occur at currents below rating and no wiring faults are found, replace the main breaker with a Honda-specified part.
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Repair Difficulty
Hard
4/5
Required Part
Main Circuit Breaker
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