Nothing contained in Art. 501 is unimportant, but some of its requirements may merit extra attention. To make sense of the potential pitfalls and conflicts, begin outside of Art. 501. Specifically, ...

Hazardous locations are classified based on the properties of the combustibles in the location. A location isn’t necessarily a whole building; it can be a room or even an open area within a building.

Hazardous areas exist in every power plant. Following proper design rules and anticipating how the plant will be operated can avoid creating mixtures of gases that could explode or catch fire.