Hmmmmm......

[kwired]

I'm guessing water got in thru the broken/missing cover, corroded the internals, and created a short between hot and neutral, resulting in what is pictured; receptacle burning from the inside out. I've seen numerous 250V 20A simplex receptacles do the same in PTAC sub-bases when the sleeve is damaged, allowing condensate to run all over the receptacle.

What is the imprint on the receptacle face in the upper left part of the pic? Doesnt appear to be an older WR designation.

Smart lock designatinon AFAICT.

It may be old enough installation that WR wasn't required yet.

Even with a good cover a weep hole in bottom of box would still drain any water that does end up inside.

 

[steve66]

WARNING
WARRANTY VOID IF
UNIT IS OPENED
OR TAMPERED WITH

Courtesy CSI

It hasn't been opened or tampered with. I think you should send it in for a warranty replacement.

 

[480sparky]

WARNING
WARRANTY VOID IF
UNIT IS OPENED
OR TAMPERED WITH

Courtesy CSI

ALL WARRANTIES EXPIRE UPON PAYMENT OF INVOICE.

 

[kwired]

ALL WARRANTIES EXPIRE UPON PAYMENT OF INVOICE.

So if I want a 1 year warranty for work you did for me I just wait for a year to pay you, right?

 

[480sparky]

So if I want a 1 year warranty for work you did for me I just wait for a year to pay you, right?

You gotta pay for it first in order to get a warranty.

 

[goldstar]

ALL WARRANTIES EXPIRE UPON PAYMENT OF INVOICE.

Otherwise known as a taillight warranty

 

[kwired]

You gotta pay for it first in order to get a warranty.

Catch 22, if I pay you before you are done you may not even guarantee to finish it I guess.

 

[ActionDave]

Just never seen one cooked this bad.

I haven't seen it bunches but I seen it more than once.

 

[kwired]

I haven't seen it bunches but I seen it more than once.

I have seen it even more often when there was a raceway entering the top of the box and no weep hole to drain out condensation. Seldom if ever seen it with NM cable fed in the back of the box like pictured in op.

 

[hbiss]

Can you prove that? Are you sure it wasn't on an arc fault breaker?

I was being sarcastic. If it was on an AFCI I'm certain the outcome would have been the same.

-Hal