It’s no secret that lighting designers must wear many hats, but according to the Illuminating Engineering Society of North America (IESNA), the actual number of those hats might surprise you. A review ...

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).

Determining the light levels in your shop is an important part of ensuring that your customers have a pleasant shopping experience. If you have limited natural light or operate at night, you can ...