Basic Principles of Electricity™

Graphics and live vignettes illustrate the concepts of voltage, resistance, amperage, grounding, bonding, the effects of electrical current on the body including resulting injuries, and how safety devices like fuses, circuit breakers, and ground fault circuit interrupters (GFCIs) work to protect against unexpected heat and energy flow. There is also a discussion of the use of switches to control electric current and the important differences between “conductors” and “insulators.”