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.

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 ...

Before you can size the branch circuits for a dwelling, you must calculate the loads. Article 220 allows two distinctly different calculation methods: the standard method in Part III and the optional ...

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 ...