Codes & Standards

According to the National Institute of Building Sciences (NIBS), Washington, D.C., construction companies comprise 13% of the global economy. And while the United States already plays a major leadership role...

Electrical contractors come in all shapes and sizes. One commonality is employees’ potential exposure to electrical hazards. Once you develop and implement the required electrical safety program (ESP), what next...

Following up on my November 2020 article, here is further information on the ramifications of the change to the long-standing six disconnect rule in Section 230.71 of the National Electrical...

If circuits are intrinsically safe (IS), the energy is at a low enough level that ignition of an explosive atmosphere will not occur if the circuit is opened, shorted or...

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. Time...