There is a brand new job where there is a 4 foot wide Duct ran above switchgear. The way we are reading 110.26(F)(1)(a)says that no Foreign systems are allowed in the 6 foot space above the equipment. The NEC uses the words "shall be dedicated"to the electrical installation. The question is when you see the words "shall be", that means there is No changing that rule. We are going to tell the Design person of this job that there are No options when it deals with Dedicated space. Comments? Thanks - Good Day
