Ok so here is the story:
I am 15 and have a good amount of experience with electricity, electric wiring and electronics. Me and my mom were at my aunts house replacing carpet in her bathroom. After cutting the new carpet and getting in place we had trouble getting it under the hardwired basebord electric heater
. We did eventually get it in place but we wanted to see how the heater was attached to the wall. So I took off a small plate that has the dial switch on it. After seeing that there was no bolt or screw holding it to the wall I then immediately put the plate back on.
As soon as I put the plate on there was a huge spark
. At the sight of the spark I let go of the plate and jumped backwards.
I later figured out that the positive lead of the switch touched the metal case BUT THE NEGATIVE
did not touch the case at the same time!
Now correct me if Im wrong but that should not do that. If you look in the pictures you can see me taking a mulit-meter and having it read 123 Volts AC between the switch and metal case.
I say it shouldn't have read that kind of voltage between the switch and the medal case BUT my mom (who has no electrical knowledge) and the electrician that she called (and installed it) says that it should and is perfectly fine.
I'm sticking to my hypothesis that something has gone wrong or it wasn't wired up correctly.
Please take a look at the pictures and give your opinion. (Oh By the way the spark DID NOT trip the breaker. And in the photos you can see the black spot on the metal where the spark happened.)