The 20a breaker on the left states 120/240 on it. The 15a breaker/breakers on the right are for the garage outlets and lights. This sub box is about 30-40 feet from the main box. What other info could I get to help?
Here are more pics of the box
I dont plan to use the old element box. I doubt the controls and such would survive 400 degrees. Is the hole in the back enough ventilation?
Is there any kind of insulation panels I could just glue/attach to the outside?