In power distribution systems, three-phase transformer configuration directly impacts system reliability and load management.

A thorough understanding of Delta and Wye service transformers, their primary and secondary windings, and their windings’ voltages, will help HVACR service technicians in their understanding of ...

The article in the March 3 issue of The News dealt with the secondary windings of a Delta service transformer with one winding center-tapped to the ground. The article stated that the power-leg or ...

This article is based on the 1999 National Electrical Code (NEC). Installing transformers in accordance with the NEC is critical to ensuring a safe electrical installation as well as a reliable power ...