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. Grow facility requirements Are there any...

The national debate over energy and climate change has played out on a number of fronts. Even some of the more mundane matters have come under scrutiny. For example, take the energy efficiency of dishwashers. This month, the...