The 2026 edition of the National Electrical Code (NEC) includes several structural changes to help align it with proposed restructuring of the 2029 edition. Dwelling unit calculat ...

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 ...

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.