Electrical rooms and mechanical, electrical and plumbing spaces are often an afterthought when it comes to building design and planning. This shortsightedness can have unfortunate consequences on the cost, operations and flexibility of the electrical systems for the future. NFPA 70: National Electrical Code dictates the minimum amount of space needed around the equipment for access, operations, safety reasons and conduit installation. Together, with the actual equipment sizes, this defines the overall minimum dimensional requirements of the room.