Chapter 1: DESIGN PROCESS

Several standard system voltage and wiring arrangements are in use in North America and include: 120 volt, 1-phase, 2-wire; 120/240 volt, 1-phase, 3-wire; 120/208 volt, 1-phase, 3-wire; 120/208 volt, 3-phase, 4-wire; 277/480 volt, 3-phase, 4-wire; and 2400/4160 volt, 3-phase, 4-wire. Typical applications for each of these arrangements are ... ................
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