Electrical Systems

This live-action video introduces the basics of electricity. Computer animation adds interest and excitement as the video comes to life in its coverage of atoms, conductors, insulators, free electrons, voltage, current, resistance, magnetism, attraction-repulsion, electromagnets, a simple circuit, and other electrical principles.

Those who work with electricity continually run the risk of electric shock and electrical fires. This video details electricity-related safety procedures to follow for these hazards as well as protection of electrical instruments and solid-state devices. An excellent overview for those who work with electricity and a useful general safety video for anyone else studying technology.

The average electrician might not want to admit it, but electricity is scary—and a wise professional will always take its volatile nature into account. If something does go wrong and an injury occurs, knowledge of how to deal with the situation and treat the victim is essential. This program offers a solid grounding in electrical safety. Led by an engaging host and qualified electrician, it examines the hazards of electricity; the cause, effect, and treatment of electric shock; and how to avoid the dangers. It also explains risk management, testing for dead, electricity and water, the effects of different levels of current on the body, and first aid techniques to administer to shock victims, including the DRABCD procedure.

After a general introduction of electricity—electrons, current, kilowatts, and the journey of electrical power from utility 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.