Ford Short Circuit or Severe Overcurrent

Charger trips the house breaker immediately or within a few seconds of starting a charge, with no specific charger error code.

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

Shorted internal wiring in charger, Pinched conductor at cable gland, Shorted main contactor, Incorrect breaker size or type for charger rating

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset a breaker that trips instantly. This indicates a potentially dangerous fault.

  • 1. Visual inspection (power OFF): Open the charger and look for obvious shorts: melted insulation, exposed copper touching the enclosure, or burnt components.
  • 2. Check cable entry: Ensure the cable is not pinched where it enters the charger housing.
  • 3. Verify breaker sizing: Confirm that the breaker rating matches the charger’s installation requirements. An undersized breaker may trip under normal load.
  • 4. Professional testing: A technician should perform insulation resistance and continuity tests to locate the short and replace the damaged component (cable, contactor, or wiring).
Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Internal Power Wiring or Main Contactor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements