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 ...

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.

If you haven’t seen or heard yet, the 2020 edition of NFPA 70 ®, National Electrical Code ® (NEC ®), is set to hit the shelves this fall. As we at the National Fire Protection Association (NFPA) are ...

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).

Underground coal mining in India contributes to a share of 55 Mt production with more than 500 mines in operation. In spite of using the well-established CMRI-ISM Rock Mass Rating (RMRdyn) ...