Electrical Panel Clearance Door Swing

Clear height in front of panel 480v.

Electrical panel clearance door swing.

A clearance of at least 3 feet is required for equipment using 120 to 250 volts. Not sure if a door that is movable qualifies as a blockage. 0 9 meter 3 ft clearance when facing other electrical panels 480v. The width of panel or 0 762 meter which is greater.

But then if the panel is 3 from the door the door would not block the panel. In all cases the working space shall permit at least a 90 degree opening of equipment doors or hinged panels. 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. Headroom clearance has been required since the 1965 nec.

Updates to working space clearance around electrical equipment according to nec 2017. There are specific clearance requirements in the code. The width of working space in front of the electric equipment shall be the width of the equipment or 762 mm 30 in whichever is greater. Graphically originally from mike holt.

Installations built before the 1978 nec only require a minimum clearance of 2 ft in front of electrical equipment. 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. 0 9 meter 3 ft the width of the workingspace in front of the panel.