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 ...

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 ...

QUEBEC CITY - The great divide between HVAC contractors and engineers is probably at its widest point where residential load calculations are concerned. Contractors don't see a practical way to do ...

HONOLULU, HI — In commercial, residential, industrial, and institutional HVAC design, it is critical for design contractors and engineers to perform a load calculation. Not only is it important for ...

Step onto any household or commercial weighing scale, and suddenly your weight magically appears in neat digital numbers. But how does a simple platform know exactly how much you weigh down to a tenth ...

Based on the 2020 National Electrical Code. Article 220 of the 2020 National Electrical Code (NEC) contains the requirements for calculating demand loads for branch circuits, feeders, and services.