Electrical Panel Backboard

[kurtismonger]

Going to be mounting my electrical in an external locker on my ambulance conversion. Wondering what kind of backboard to mount all the components (solar charger, inverter, busbar, etc) and wiring. Using Victron for the most part and where they do mention mounting all they say is not to use a flammable material. But in nearly all the videos and guides I've seen almost everyone seems to be using plywood of some kind. I've seen some installs with thinner ply, but I'm thinking 3/4" thickness? Is fire rated board recommended? Also seen a few videos where people have used something like a sound deadening mat behind each component?

 

[Alloy]

I'e be more worried about the panel being conductive vs. flammable.

 

[4000lbsOfGoat]

Most buildings have all of the electrical components mounted on plywood so I don't see why that would be an issue in a camper....