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 ...

Based on the 2020 National Electrical Code. Part 1 of this two-part series taught you how to calculate branch-circuit loads. Now let's review how to perform feeder and service load calculations.

Designing a temporary heating system differs considerably from permanent installations. In early construction stages, you might face a tight roof with walls of sheet plastic, or nearly complete walls ...

Fill in the blank with the appropriate answer. When calculating inductive and LED lighting loads for circuits supplying lighting units that have ballasts, transformers, autotransformers, or LED ...

Fasteners installed near the end or edges of load-carrying members often carry more than just the applied load. They also carry a hidden load generated by bending moments in the load-carrying member.