Moen Water Intrusion at Wiring Compartment

Moen garbage disposal runs but water leaks from the electrical junction box or cord entry

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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

Leak from sink flange or discharge elbow dripping onto wiring cover, Missing strain relief on power cord, Cracked housing near junction box, Overfilled sink causing water to enter through top and run down

How to Fix / Troubleshooting

Safety first: Immediately turn off the breaker and unplug the disposal. Do not touch any wet electrical components.

  • Locate source of water:
    • Dry the area and observe while running water (disposal off).
    • Identify whether the leak originates from the sink flange, dishwasher inlet, or discharge elbow.
  • Repair primary leak:
    • Fix the flange, inlet, or elbow leak as appropriate (reseal, tighten, or replace gaskets).
  • Inspect wiring compartment:
    • Once completely dry and power is off, remove the wiring cover.
    • Check for corrosion or burned connections.
  • Replace if damaged:
    • If there is significant corrosion or evidence of arcing, replace the disposal.
  • Reassemble safely:
    • Ensure the power cord has a proper strain relief and the cover is sealed.
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Repair Difficulty

Hard 4/5

Required Part

Wiring Compartment / Power Cord Strain Relief
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