GFCI Burn marks

Old 09-13-19, 11:48 AM
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GFCI Burn marks

I am in the process of changing out a GFCI outlet in my garage and when I took the GFCI out I noticed burn marks on both the wire and the LINE hot connection point. What would cause this and is there anything I should do before I install the new GFCI?
Old 09-13-19, 11:51 AM
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That would usually indicate a high connected load and a loose screw terminal.
When replacing the GFI.... make sure all the screws are tight.
Old 09-13-19, 12:07 PM
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Pete Pretty much covered my thoughts. The only other cause could have been someone moving the recepticle (installing or removing) while it was live and touching the box with the terminal screw.

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