A. The calculation of a feeder or service load for existing installations can be based on the actual maximum demand under all of the following conditions [220.87]: 1) The maximum demand data for one ...

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 ...