I was shocked to hear an electrical panel growling, as I passed by during an air leak study recently.  Because Carona and air leaks are on nearly the same frequency the shop was full of competing air leak sounds through the headphones.  As I passed the electrical panel a growling noise  came up and lead me to the panel.  I pulled out the infrared camera and here is what I saw…

Not only were some of the breakers running hot, but we saw a wire arching…  We saw this right through the panel cover…

A work order for was generated immediately.

Although we were looking for air leaks, this safety issues took center stage.