The NEC requirements for branch-circuit load calculations are in Art. 220, Part II. These cover three classifications of loads: Lighting loads for specified occupancies (220.12) Other loads for all ...

Article 100 defines “demand factor” as the ratio of the maximum demand of a system (or part of a system) to the total connected load of a system (or part of a system). Using demand factors is a way to ...

Not long ago a residential load calculation — also known as a heat loss calculation or a load calc — was something you had the luxury of skipping. There was a good reason for avoiding it. It was ...

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 ...

Understanding how to use load capacity charts is crucial for proper selection and safe application of a number of machine types, but perhaps none more so than telescopic handlers. These versatile ...

Just like when operating cranes, understanding how to read load charts, and applying that information to the operation of a digger derrick is critical. In many ways, digger derricks are similar to ...