480v transformer wiring diagram Figure 4-17.single-phase transformer connected to give 120/240-volt Transformer phase 480 volt 240 15kva step dry type nema down 3r isolation transformers secondary primary electrical
Figure 4-17.Single-phase transformer connected to give 120/240-volt
Transformer wiring 480 diagram 240 480v diagrams volt wire kva phase 120 single secondary primary simple drawing low federal pacific