Codes & Standards

Jim Dollard has an extensive background in codes and standards. Send questions about the National Electrical Code (NEC) to Jim at codefaqs@gmail.com. Answers are based on the 2020 NEC. Dedicated...

Before we move on, there is one last definition to review as we cover the upcoming changes in the 2023 National Electrical Code. Uninterruptible Power Supply (UPS). This term has...

In last month’s column, I explained the proper use of the term “panelboards,” which are the interior busing and breaker terminations covered by parts I and III of Article 408...

Premises electrical distribution systems in outside buildings, structures or facilities are often delivered at high- or medium-voltage levels by the serving utility, depending on the area. The purpose of transformers...

Jim Dollard has an extensive background in codes and standards. Send questions about the National Electrical Code (NEC) to Jim at codefaqs@gmail.com. Answers are based on the 2020 NEC. Office...