Electrical Panel Clearance Door Swing
Nec says 3 on each side and 30 in front.
Electrical panel clearance door swing. Clear height in front of panel 480v. Updates to working space clearance around electrical equipment according to nec 2017. The clearance is 36 in front and 30 side to side but that side to side clearance does not have to be centered on the panel as long as both edges are accessible. Graphically originally from mike holt.
The 30 in wide rule has been used since the 1971 nec. Not sure if a door that is movable qualifies as a blockage. In all cases the working space shall permit at least a 90 degree opening of equipment doors or hinged panels. Headroom clearance has been required since the 1965 nec.
In every case the width depth and height of the working space around electrical equipment must allow all equipment doors or hinged panels to open at least 90 degrees. A clearance of at least 3 feet is required for equipment using 120 to 250 volts. But then if the panel is 3 from the door the door would not block the panel. The width of panel or 0 762 meter which is greater.
0 9 meter 3 ft the width of the workingspace in front of the panel. Clearance to ensure that an electrical panel can be accessed at all times during inspection maintenance or emergency osha has determined that the working space in front of the equipment must be at least 30 inches wide or the width of the equipment. There are specific clearance requirements in the code.