The NEC contains detailed requirements for calculating service and feeder loads in many types of occupancies. Although most of these requirements are found in Art. 220, other rules affecting service ...

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 ...

Because of numerous factors and conditions, the heat transfer process for space heat gains, unlike space heat losses, is not steady state and must be analyzed carefully and accurately in order to ...

BEST PRACTICES: The use of software for load calculations is a key trait of the contractor of the future, according to the latest Contractor of the Future study from ACCA and the Farmington Consulting ...

It is mandatory that refrigeration load calculations be performed during the design stage in order to properly size the components. Load calculations are useful on other occasions as well, such as to ...

The electrical panel, also known as the service panel, is the control center for all the electrical circuitry in a residence. Today’s panels are bigger than earlier versions. They have to be, because ...

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 ...