What is usually happening
- Heat means resistance is showing up somewhere in the connection.
- That may be overload, a worn contact surface, corrosion, or a loose termination.
- The hottest point is often the clue.
First checks to run
- Compare inlet temperature, cord end temperature, and panel behavior.
- Look for discoloration, smell, pitting, or brittle plastic.
- Check what heavy AC loads were running when heat showed up.
Typical fixes
- Replace burned or worn connectors, not just the visibly worst part.
- Clean up corrosion and inspect the inlet itself, not just the cord cap.
- Reduce unnecessary simultaneous loads until the connection is proven healthy.
When it is urgent
- Hot to the touch, smell of insulation, or visible deformation.
- Intermittent power, flicker, or buzzing under load.
- Evidence of arcing or blackened blades.
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