This guide was developed to serve as a supplement to the Occupational Safety and Health Administration's (OSHA) Electrical Safety Standards, 29 CFR 1910, Subpart S, Electrical. It is designed for use by a variety of people (layman, worker, employer, compliance safety and health officer, union official, educator, and others) in training, education, information, and assistance in complying with regulations. The guide provides additional explanation and clarification for individuals who have little or limited training or familiarity with the field of electricity. However, no attempt has been made to explain the basic principles of electricity. Some of the more technical provisions are explained to a level of detail appropriate to achieve an appreciation of the hazards involved and an understanding of the correct safeguards or precautions that should be employed. The illustrated guide (104 figures included) follows the format of 29 CFR 1920, Subpart S as it would appear in the Federal Register. Major topic areas include: general requirements; wiring design and protection; wiring methods, components and equipment for use; specific purpose equipment and installation; hazardous (classified) locations; and special systems (including systems over 600 volts- nominal, emergency power systems, communications systems, and others). (JN)