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 ...

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 ...

Whether they're for journeymen, master electricians, or contractors, most electrical licensing exams require you to calculate residential loads and service or feeders sizes using one of two methods.