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These requirements cover portable, stationary, and fixed power units having an input rating of 600 volts or less, direct- and alternating- current, with at least oneoutput not marked Class 2, and that are intended to be employed in ordinary locations in accordance with the National Electrical Code, INNS/NFPA 70.

These requirements cover general purpose power supplies and power supplies for uses such as to supply some household appliances, school laboratories, cathodicprotection equipment; power supply-battery charger combinations; and industrial equipment, including inverters, divided into two classes - those rated 10kilovolt-amperes or less and those rated more than 10 kilovolt-amperes.

Power units with all outputs identified as Class 2 are covered under The Standard for Class 2 Power Units, UL 1310.

These requirements cover battery chargers other than the type intended to charge motor-starting batteries and those for charging industrial batteries which powermaterial handling trucks, tractors, personnel carriers, and similar motive equipment. These battery chargers are covered under The Standard For Battery Chargers forCharging Engine-Starter Batteries, UL 1236, and the Standard for Industrial Battery Chargers, UL 1564, respectively.

A battery charger for charging automotive-type batteries for other than motor-starting purposes, such as powering a trolling motor, is investigated to the requirementsin this standard and the applicable requirements for battery chargers under UL 1236, the Standard for Battery Chargers for Charging Engine-Starter Batteries, or UL1564, the Standard for Industrial Battery Chargers.

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Edition: 6th Published: 01/01/1994