Wye or “star” service transformers are one and the same. The names come from the secondary winding configuration, which looks like a “Y” or three-sided star (Figure 1). For the remainder of this ...

Q This is an old question, but I would appreciate additional input. We have a utility main service, wye-wye pad-mounted transformer, three-phase, four-wire secondary with ground ring and four rods, ...

One of the more popular three-phase electrical services supplied to medium-size commercial buildings is the Wye or Star configuration transformer. The name comes from the transformer’s secondary ...