This standard specifies voltage surge limits and testing requirements for lighting equipment. It covers all types of lighting equipment used for general illumination (typically found in residential@ commercial@ and industrial applications) and connected to any of the following commonly distributed 60 Hz alternating current (AC) power line systems: a) 120 V@ Single Phase b) 220/230 V@ Single Phase c) 208/240 V@ Single Phase d) 277 V@ Single Phase e) 347 V@ Single Phase f) 480 V@ Single Phase g) 480 V@ 3 Phase NOTE??These line voltages are nominal and include commonly encountered nameplate variations of the above. As an example@ products rated at either 117@ 120@ or 125 V AC would be covered as nominal 120 V systems. This standard covers lighting equipment in terms of application and wattage (operating input power level).