Wanted to double check this breaker

[Marc M]

Just wanted to double check to see if this breaker is okay for two conductors. The installer was the home owner who was an electrician, he said it was, It doesnt look like it to me, however.

[Ken Rowe]

No, it's not.

[Marc M]

I thought so. I thought because he was an electrician he knew something I was unaware of.
Thanks Ken

[Ken Rowe]

From my experience electricians have the most hazardous wiring in their own homes. :)

[Paul Kondzich]

The blue wire going to the buss bar is nice too.