UL 72

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These requirements cover electric-fence controllers to be employed on lighting or line circuits in accordance with the National Electrical Code, NFPA 70.

These requirements cover portable and permanently mounted electric-fence controllers with peak-discharge or sinusoidal-discharge output for indoor or outdoor use, including battery-operated controllers intended to operate from battery circuits of 42.4 volts or less, line-operated controllers intended to operate from circuits of 125 volts or less, combination controllers intended to operate from either a battery or a line circuit, and photovoltaic module battery operated controllers.

These requirements do not cover electric-fence controllers for the continuous (uninterrupted) current type or intermediate equipment, such as a converter, a rectifier, or the like, that is sometimes used between the primary source of supply and an electric-fence controller and that is investigated only as part of a complete controller.

A product that contains features, characteristics, components, materials, or systems new or different from those in use when the Standard was developed, and that involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to mai ntain the level of safety for the user of the product as originally anticipated by the intent of this Standard.