Briggs & Stratton Repeated Breaker Tripping

Generator runs but trips its internal breaker or external breaker frequently.

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.

Possible Causes

Overloaded generator circuits, Short circuit in connected load wiring, Failing generator main breaker, Moisture intrusion in junction box or ATS

Safety first: Turn OFF all breakers before inspection. Only qualified persons should open electrical enclosures.

Reduce load: Turn off non-essential loads and see if tripping stops.
Isolate circuits: Turn branch breakers on one at a time to identify a problematic circuit.
Inspect for moisture: Check the generator output junction box and ATS for water, condensation, or corrosion. Dry and seal as needed.
Main breaker test: If the generator main breaker is warm or trips at low load, replace it with the correct Briggs & Stratton-rated breaker.

Hard 4/5

Generator Main Circuit Breaker

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