SWITCHBOARDS AND SWITCHGEAR


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SWITCHBOARDS AND SWITCHGEAR
SWITCHBOARDS AND SWITCHGEAR78. A switchboard is defined in the National Electrical Code as a large single panel, frame, or assembly of panels on which are mounted, on the face or back or both switches, overcurrent and other protective devices, buses, and, usually, instruments. Switchboards are generally accessible from the rear as well as from the front and are not intended to be installed in cabinets.79. The types of switchboards, classified by basic features of construction, are as follows: Live-front vertical panels Dead-front boards Safety enclosed boards (metal-clad)
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. SWITCHBOARDS AND SWITCHGEAR, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export