Electrical professionals have long observed the “underloading” of customer-owned transformers, which, in part, is brought about by National Electrical Code (NEC) Chapter 2 design demand rules. This ...

Based on the 2020 National Electrical Code. Article 220 of the 2020 National Electrical Code (NEC) contains the requirements for calculating demand loads for branch circuits, feeders, and services.

This tutorial discusses the expanding role that light-emitting diodes (LEDs) are playing in general lighting applications. It compares LED performance versus other lighting technologies. It also ...

Fig 1. Designers can parallel identical fixed-ratio isolated bus converters to create the high-power array in an intermediate bus architecture. Fig 2. This array of identical fixed-ratio isolated bus ...