If the power source is a listed Class 2 transformer or listed Class 2 power supply — or it’s in listed equipment marked to identify the Class 2 power source — you’ve got a Class 2 circuit between the ...

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.

Although the Railroad Safety Improvement Act of 2008 was written primarily for the Class I’s, many of the short line and regional railroads that touch roughly one out of every five carloads the Class ...