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. Office...

There is still more to report On in Article 100. As you look through the 2023 National Electrical Code — or review the first and second draft reports online—you will...

Many people refer to the enclosure and the interior panelboard as a “panelboard.” Panelboards do not include the enclosure or cabinet, so this is a misappropriation of a more complex...

In last month’s column, “Dedicated IT Rooms,” I explored the code rules for IT equipment facilities, where isolated grounding circuits and receptacles are often installed to reduce electromagnetic interference in...

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. NM...