Requirements for branch circuits, feeders, and services each have their own Articles (210, 215, and 230, respectively). The NEC also contains an Article providing requirements for outside branch ...

To avoid confusion, follow the NEC sequence when performing your circuit calculations. You'll see this sequence in each of the Annex D examples. You'll also see it in the structure of the Chapter 2 ...

This is part 1 in an ongoing series on HVAC load calculations. The folks at SNIPS have asked me to do a basic how-to article about HVAC Manual J load calculation as that is allegedly a big part of my ...