I had a electrician install a new breaker box on the outside of my
house where the old one was. The install was done Friday and
yesterday, Sunday (house is vacant) I found the main breaker tripped
and loose (I think off it's track). I called the electrician back
Monday and he was very prompt to fix it but I was not there when he
did. When I came to inspect it later the same day, I found that the
main circuit breaker was firmly in place and on but in the middle of
the breaker (main breaker looks like 2 breakers side by side with one
lever) was a screw and washer tightened to it in the space between the
two breaker as if it was assisting to keep the breaker in it's present
position. All looks good but I've never seen a screw/washer screwed
into the middle of a main circuit breaker to hold it. Electrician who
did original job told me that the metal box is grounded so I guess the
screw is grounded but will the plastic housing of the breaker crack
with a washer pressed against its outer face (visible face) in time?
I've never seen a screw and washer in or around a circuit breaker so
this makes me suspicious but all appears to work well so far today.