Enphase Upstream Ground Fault Protection Trip

Charger causes GFCI or RCD breaker to trip, but the charger itself shows no error.

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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

Cumulative leakage current from charger and other loads, Incompatibility between internal GFCI and upstream GFCI breaker, Moisture ingress causing leakage, Faulty charger insulation

How to Fix / Troubleshooting

Safety: Ground fault trips must be taken seriously.

  • Dedicated circuit: Ensure the Enphase charger is on its own circuit, ideally with a standard breaker if the charger has built-in GFCI per code.
  • Dry environment: Inspect for moisture around the charger and cable. Allow to dry fully before retesting.
  • Remove other loads: If other devices share the GFCI, disconnect them and test only the charger.
  • Consult electrician: An electrician should verify code-compliant GFCI arrangement and measure leakage current.
  • If leakage is high from charger alone: Internal insulation or GFCI circuitry may be compromised; the charger should be serviced or replaced.
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Repair Difficulty

Hard 4/5

Required Part

Enphase EV Charger Internal Insulation and GFCI Circuit
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