BASIC NEC CODE RULES AND DESIGN PRACTICE

Voltage drop calculation for a 1-Ø conductor or one phase of a 3-Ø circuit: Voltage drop calculation for a 3-Ø conductor: where. VD is the line to neutral voltage drop of the conductor expressed in Volts, for a 1-Ø conductor; or the line to line voltage drop of the conductor expressed in Volts, for a 3-Ø conductor. ................
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