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The following paragraphs are taken word for word from Bulletin H36 of the National Bureau of Standards. DEFINITIONS     Conductor means a metallic conducting material, usually in the form of a wire or cable, suitable for carrying an electric current. It does not include bus bars.     Effectively grounded means permanently connected to earth through a ground connection of sufficiently low impedance and having sufficient current-carrying capacity to prevent the building up of voltage which may result in undue hazard to connected equipment or to persons.     Enclosed means surrounded by a case which will prevent accidental contact of a person with live parts. A solid enclosure means one which will neither admit accumulation of flyings or dust, not transmit sparks or flying particles to the accumulations outside.     Electric fence means a barrier to animals or fowls, consisting of an electrified conductor energized through an electric-fence controller.     Electric-fence wire means any electrified conductor, such as a wire, ribbon, tape, rod, tube, plate mesh, or any other form suitable for, and used as, a barrier to animals or fowls.     Grounded means connected to earth or to some extended conducting body which serves instead of the earth, whether the connection is intentional or accidental.     Lightning arrester means a device which has the property of reducing the voltage of a surge applied to its terminals, is capable of interrupting follow current if present, and restores itself to its original operating condition. SEC. 60. SCOPE AND INTENT OF RULES 600. Scope. These rules apply to the installation, use, and identification of electric fences and to the construction and characteristics of the controllers used with them and through which electric energy is delivered to the fence. 601. Intent. The nature and use of electric fences are such that a person, as well as an animal, will receive an electrical shock if the electric-fence wire is touched while standing on the ground. It is the purpose of these rules so to limit such electrical shock that it will not cause serious or permanent injury.