Codes & Standards

A review of protection techniques for hazardous (classified) locations reveals descriptive information about each under the “division” and “zone” classification systems. The type of protection technique permitted in a particular...

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. Panic...

Let’s continue looking at what’s new and different in Chapter 2 of the Code. 210.70 Lighting Outlets Required. There are four changes in this section. Switches for control devices for...

Alternating current and direct current microgrid systems are not very common yet, but with all the new energy sources being developed, they may become important energy sources in the future...

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. Agricultural...