AmazonCommercial High Inrush Current / Marginal Electrical Circuit

Disposal causes noticeable dimming of lights or flickering when starting.

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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

Disposal and other heavy loads on same circuit, Undersized branch circuit wiring, Loose neutral or hot connection in panel or junction box, Aging breaker with poor contact

How to Fix / Troubleshooting

Safety First: Electrical panel work should be done by qualified persons. Turn OFF power before opening any boxes.

  • Step 1 – Check circuit loading: Identify what else is on the same circuit as the disposal. Move other heavy loads (microwave, toaster oven) to different circuits if possible.
  • Step 2 – Inspect connections: With power OFF, check the junction box at the disposal for loose wire nuts or backstabbed connections at the wall switch.
  • Step 3 – Consider dedicated circuit: For commercial-grade AmazonCommercial disposals, a dedicated 15A or 20A circuit is recommended to minimize voltage drop.
  • Step 4 – Consult electrician: If dimming is severe or widespread, have an electrician inspect the service panel and branch wiring.
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Repair Difficulty

Medium 3/5
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