Ryan J wrote:

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I think it had started arcing from teh nuetral to the box, and it just generated heat.

Ryan... Your ground & grounded phase are supposed to be at the same potential! [Linked Image] If there was high resistance between the outlet terminal & the actual neutral wire, I can see were you're coming from.. but if you really think this was happening, I'd look a little closer at the service panel neutral/ground bonding & ohm out the neutral back to this point from there to make sure they are, in fact, at the same potential!

-Randy