Ax14728g.aw - Home | US Forest Service

120/208 Volt, 3 phase, 4 wire, Wye; 277/480 Volt, 3 phase, 4 wire, Wye. ... 13. Turn off main breaker or switches. 14. Remove panel front. 15. Turn on power. 16. No Load Voltage Measurements: Turn all branch circuit breakers or main breaker off for no load voltage measurements. Measure voltages with voltmeter line-to-line, (phase-to-phase) 1 to ... ................
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