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 ...

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 ...

Question: What are the standard voltages recognized by the NEC for load calculations? See answer below. Answer: 120, 120/240, 208Y/120, 240, 347, 416Y/240, ...

WE'VE BEEN TALKING for the last three months about how to properly size a heat source when replacing oversized cast-iron boilers that once used solid fuel. They come with an existing castiron ...

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 ...

Bigger is not always better, especially when it comes time for you to install new central air conditioning. Choose a system that is just the right size for your home and its particular characteristics ...

Containers offer a shipping method for small businesses that reduces theft, keeps the shipping load traveling together as a unit, and minimizes the likelihood of losing part of the cargo when shipped ...

The NEC 2026 introduces innovative provisions like Power Control Systems and clearer interconnection rules, enabling engineers to optimize distributed energy projects by ...