I have a very old house an electrician put a wall heater in for the landlord but I need an outlet there instead. The heater is pulling 40amps from two 20amp breakers tied together.
There is only one wire going to the wall heater so I connected the wire to an outlet and installed that into the wall, I tested my work and blew light bulbs in the lamp I used to test. I know I have too much power going to the outlet but if I changed the two 20amp breakers and replaced them with one 20amp breaker would my outlet work safely?
Also if I shut the breaker labeled main for the panel off would this allow me to change the breakers to 20amp without getting shocked?
Thank you for your help!