Tesla
Short Circuit or Overcurrent on EV Circuit
Breaker trips immediately or shortly after starting a charge session
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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
Shorted conductors in branch wiring, Damaged Wall Connector internal wiring, Shorted contactor, Incorrect breaker size vs configured current
How to Fix / Troubleshooting
Safety: Repeatedly resetting a tripping breaker without finding the cause is dangerous. Do not bypass or upsize the breaker.
- Visual inspection: With power off, inspect the Wall Connector interior for burnt smells, melted insulation, or obvious shorts between terminals.
- Check cable and conduit: Look for crushed conduit, rodent damage, or screws/nails penetrating the cable run.
- Verify configuration: Ensure the Wall Connector's configured current does not exceed 80% of the breaker rating.
- Insulation testing: Have an electrician perform insulation resistance tests on the branch circuit and Wall Connector to locate faults.
- Replace damaged components: If the Wall Connector shows internal damage or a shorted contactor, replace the unit.
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Repair Difficulty
Professional Required
5/5
Required Part
Tesla Wall Connector internal contactor and branch circuit conductors
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