Amperfied Upstream Protection Nuisance Tripping

Charger trips the upstream RCD/RCBO or main breaker as soon as a charging session starts, but no specific error code is shown on the charger.

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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

Incorrect type of RCD (e.g., Type AC instead of A or B), Shared RCD with other loads causing cumulative leakage, Inrush current exceeding breaker characteristics, Actual earth leakage in charger or cable

How to Fix / Troubleshooting

Safety: Repeated tripping indicates a protection issue. Do not simply upsize breakers without assessment.

  • Note breaker details: Record the rating and type of the tripping device (e.g., 40 A Type A, C‑curve).
  • Test with only charger on: Turn off other circuits if possible and test charging. If tripping stops, cumulative leakage may be the cause.
  • Have an electrician review design: The charger should ideally be on its own RCD/RCBO of the correct type as specified by Amperfied.
  • Insulation and leakage tests: A professional should test earth leakage and insulation resistance of the charger and cable. Replace any faulty components.
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Repair Difficulty

Hard 4/5

Required Part

Upstream RCD/RCBO Coordination (Installation Component)
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