We have a 3 story type 2 constructed dormitory built in 1966 with 2 exterior metal stairways with 39 inches wide stair treads and a central stairwell that has 36 inches wide stair treads. It has old fashioned hand rails. The contractor is replacing the old handrails The new prefab stair side sections have handrails that are attached on the
What is the largest GFCI circuit-breaker (any company) that is "Class A" and available on the market right now? Is 60-amp the largest that comes as Class A?