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 ...

Here is a simple method for estimating the actual load on an electric motor without special equipment. But first, a word of caution: Some applications (e.g., a large forced draft fan) require more ...

This is part 1 in an ongoing series on HVAC load calculations. The folks at SNIPS have asked me to do a basic how-to article about HVAC Manual J load calculation as that is allegedly a big part of my ...

Manual J may overestimate heating loads due to conservative assumptions and sensitivity to unknown insulation values. Thermentor™️, a virtual load calculation solution, is an alternative to Manual J.

For the PDF version of this article, click here. Many electronic circuits can rapidly shift between a sleep state and full load operation, placing a heavy requirement on the power converter to ...

Note: This article is based on the 2008 NEC. A dwelling unit is a single structure that provides complete and independent living facilities, according to the NEC definition found in Art. 100 (Fig. 1).