Hi,
When checking the circuits and installing new electric
baseboard heat I found that an outlet and heater were on the same
circuit...so I was getting 220 V to a 120 15A outlet. (it fried my
battery and charger) An electrician came by and corrected the
circuit so that I would get 120 to the outlet.
Did not realize at the time that the heater was tied into it
because the heater had been removed. Wired in the heater and it did
not work. Called someone else, first electrician did not keep several
appointments. This person comes over and puts it (the heater) on its
own 220 circuit.
Next I find that I need to rewire through another
knockout...do that. Mount heater. When heater turns on the breaker
trips. It is a double pole in a subpanel. If I leave the heater on
and turn the breaker on then the whole subpanel trips from the main.
With the heater off and the breaker reset it just trips the breaker
again. I need to recheck my connections and then those in the
subpanel.
To me it sounds like a short, or maybe a bad breaker?
Advise to troubleshoot myself? The heater is in the bathroom....I've
heard of GFI breakers. Should I be installing one of these?

Thanks in advance,
Bill