"40th anniversary." Includes index. Includes glossary.

Preface -- Electrical safety -- Basic electricity -- Electric circuits -- Electric meters -- Components, symbols, and circuitry of air-conditioning wiring diagrams -- Reading schematic diagrams -- Alternating current, power distribution, and voltage systems -- Installation of heating, cooling, and refrigeration systems -- Basic electric motors -- Components for electric motors -- Contractors, relays, and overloads -- Thermostats, pressure switches, and other electric control devices -- Electronic control devices -- Heating control devices -- Troubleshooting electronic control devices -- Residential air-conditioning systems -- Commercial and industrial air-conditioning control systems -- Troubleshooting modern refrigeration, heating, and air-conditioning control circuitry and systems -- Appendices.