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 ...

The rules for feeder and service load calculations differ from those for branch-circuit calculations. Do you know the differences? With branch circuits (Art. 220, Part II), you’re basically ...

• Engineering-calculation software such as Mathcad simultaneously performs and documents calculations using standard math notation. • Useful capabilities include support for matrices, differential ...

In Part 1, we looked at specific types of commercial loads. Let’s use some examples to show yet another difference in demand factors. If you were to watch daily operations at a marina [555.12], you’d ...

What do turf wars, battle lines, and tug of war have in common? They are all being mentioned by people involved in the creation of two rival commercial HVAC load calculation standards, one from the ...