measure of power or the rate of energy consumption by an electrical device when
it is in operation. Watts are calculated by multiplying the voltage at which an appliance
operates by the current it draws (Watts = Volts X Amperes).
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A private organization which tests and lists electrical (and other) equipment for electrical and fire safety according to recognized UL and other standards. A UL listing is not an indication of overall performance. Lamps are not UL listed except for compact fluorescent lamp assemblies - those with screw bases and built-in ballasts.