GFCI NUISANCE
ClipperCreek Moisture-Induced Ground Fault Sensitivity

EVSE frequently trips its internal ground fault protection shortly after charging starts, especially in damp weather.

Advertisements

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.

Advertisements

Possible Causes

Moisture inside J1772 handle, Water ingress into EVSE enclosure, Contaminated GFCI sensor ring, Cracked cable jacket allowing water intrusion

How to Fix / Troubleshooting

Safety first: Do not tape over or bypass GFCI functions. Turn OFF the breaker before opening the unit.

  • Dry environment: Move the cable and handle to a dry location and allow them to dry thoroughly for 24 hours.
  • Inspect seals: Check the EVSE enclosure gasket and cable entry gland for cracks or gaps that could allow water in. Replace damaged gaskets.
  • Check cable jacket: Look for cuts or splits in the outer jacket, especially where the cable flexes. Any breach can wick moisture inside.
  • Internal inspection (qualified): With power OFF, inspect the GFCI sensor ring and control board for signs of moisture or corrosion. Clean and dry as needed.

If nuisance trips continue in dry conditions, the GFCI sensor or control board may be overly sensitive or damaged and should be replaced.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

GFCI Sensor and Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements