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).

Mlulti-family service calculations can seem confusing, especially since you have a choice of methods — standard (Art. 220, Part II) and optional (Art. 220, Part III). But clearing up that confusion is ...

Understanding the cost of each unit you produce is essential to ensure your business remains profitable. To calculate the cost per unit, add all of your fixed costs and all of your variable costs ...

Understanding the components of your company's sales is important for budget-planning purposes and for efficiently marketing your products. Per-unit price is one way of differentiating between ...