Exception No. 2 permits the ampere rating of a receptacle installed for electric discharge lighting to be based on 410.30(C). This exception is based on the fact that electric discharge lighting systems typically have a higher power factor than incandescent lighting systems, and therefore the current draw for a given wattage is lower. As a result, a receptacle with a lower ampere rating can be used for electric discharge lighting than for incandescent lighting. Flag for review