Is the flame retardant rubber plate insulated? What is the insulation grade? Is it related to the thickness of the rubber sheet?
Flame retardant may not be insulated, and some flame retardant rubber board instead of conductive, so not all rubber are insulated. You'll have to try or ask
Not necessarily, the general rubber board is insulated, including flame retardant rubber plate, insulation class and rubber sheet thickness and material have certain relations, here on the same constant sum, can see the relevant standards.
