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 ...

220 affects many long-held values that have been used to calculate the electrical load in a building for many years ... Code rule change and the background that led to the Code-Making Panel’s decision ...

Note: This article is based on the 2002 NEC. Even if you work with stamped drawings, you'll eventually need to do commercial load calculations in the field or on a licensing exam. The National ...