Each switch box shall connect to and control only one associated piece of electrical equipment (including sockets). (1) Power distribution from the primary main distribution board (distribution cabinet) to secondary distribution boards can be branched; that is, one main distribution board may supply power via multiple branch circuits to several secondary distribution boards. Whether in a home or an industrial facility, this box keeps your electrical setup organized, functional, and efficient. Here we describe matching 15-Amp receptacles to 15-Amp circuits, 20-Amp receptacles to 20-Amp circuits, two-wire receptacles where no ground is present, GFCI and AFCI electrical receptacles, and the proper electrical box to hold and mount these devices. This article series describes how to choose. DOUBLE-GANG BOX for two light switches together in the same box, or two duplex receptacle outlets. The purpose of electrical boxes Wiring connections—where wires join an outlet, switch or other wires—must be inside an electrical.
[PDF Version]