1Four voltages
120/240V 1 PH N 3 Wire
120/208V 3 PH 4 Wire
277/480V 3 PH 4 Wire
120/240V 3 PH 4 wire
2neutral conductors needed for how many PH and what V
120v, 120/208 1PH or 3PH, 277V, 277/480 1PH or 3PH
3Medium Voltage
excess of 12,000V
4Low Voltage
120/208V, 277/480V
5NEC Conduit
Also called raceways
8IMC Types are typically
compression or threaded
12Electrical nonmetal tubing
13pvc conduit
below grade or exterior exposed conduits
14Fusible disconnect switches
with higher risk of overcurrent
15Non-Fusible Disconnect switches
lower power, residentual
16Branch Circuit
conductors between final OCPD the circuit and the load
17SGE
Service grounding electrode
18EGC
Equipment Grounding Conductors
19Earth connections
grounding rod, structural steel, unground water pipe