![]() It’s reserved to provide future access to the electrical equipment, protection of the electrical equipment from foreign systems, and for installing conduit/other raceways supporting incoming and outgoing circuits. For each point of access to a piece of equipment, the minimum working clearances must be provided.ĭedicated space is a zone above the electrical equipment. The style and construction type of the electrical equipment dictates whether only front access is required, or if rear and/or side access also is required. from the floor, or the height of the equipment if greater than 6 ft 6 in. The width should be equal to the width of the equipment and no less than 30 in., while allowing for opening any doors or hinged panels to a full 90 deg. ![]() The higher the voltage of the equipment, the greater the depth of the working space. This includes defining minimum width, depth, and height requirements for the working space, which varies due to voltage and the specific equipment. The working space helps safeguard a clear working zone around all equipment and ensures protection for any workers or occupants within the room. Let’s first define what differentiates working and dedicated space as stated by the NEC (see Figure 1). This article will outline important considerations for these spaces in the early stages of building design as they relate to building type, intended occupancy, size, and future expectations of both the building and the electrical systems. Code-required working space and dedicated space needs must be met. There are three types of general interior electrical spaces that factor into new building design: main equipment rooms, distribution pathways, and local/branch equipment rooms.
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