Working with electricity can be dangerous. The key is that not all electrical hazards are created equal. Although each use of electricity creates a potential exposure to a hazard, the dangers vary. Electricity flows more easily through some materials than others. Some substances such as metals generally offer very little resistance to the flow of electric current and are called “conductors.” A common but perhaps overlooked conductor is the surface or subsurface of the earth. Glass, plastic, porcelain, clay, pottery, dry wood, and similar substances generally slow or stop the flow of electricity. They are called “insulators.” Even air, normally […]