I'd like to know how common are these panels that don't use plastic basepan but has only insulating sheet between the chassis and the plug-in bus bar like the following:
(click to enlarge)
What are its long term problem for those who used it. Can these reddish insulating sheet tear? What is it exactly made of?
My concern is one of the hot bus bar touching the metal chassis (in grey). What brands carry these just to see how it compares to those brands using the plastic basepan.
I'm thinking whether I should replace my main panel.