12:11

Transformers - Understanding Delta/Wye Connections [250.4(A)] (12min:11sec)

24:24

How 3 Phase Transformers Work – why we need them

26:26

Grounding Versus Bonding (26min:26sec)

28:59

Transformer configurations

18:15

Grounding, Objectionable Current [250.6, 2020 NEC]

13:21

Delta and Wye - Volts, Amps, & VA

18:14

120/240 V In-Phase or Out-of-Phase

23:08

High leg delta systems--explanation and NEC requirements