Introduction to Electricity
This program introduces the concept of electricity to the student who has used this source of energy all his or her life but has never really understood where it comes from and how it works. It gives a little of the early history and covers static and current electricity, how to measure it and sources of it. Clear graphics and illustrative footage explain the concept of current, resistance and voltage.
Inside the Electrician's Toolbox
After a general introduction of electricity – electrons, current, kilowatts, and the journey of electrical power from power company to home – this program examines the work materials and tools commonly used by an electrician. Wires, cables, conduits, boxes, receptacles, and switches are illustrated, and the tools required to cut and run cable or conduit, detect and test voltage, and wire or connect fixtures are shown in action. Wiring diagrams and blueprints are also considered, and safety is stressed throughout.