 Connectors used to power lighting fixtures must be rated at 20 amperes or higher, depending on local electrical codes.Temporary high-power distribution wiring often employs camlock connectors to connect dimming equipment, power distribution units, controllers for motorized chain hoists, and other high-power equipment to a company switch, generator, or other tie-in point.For individual dimmable lighting fixtures, UK theatrical lighting installations normally use the BS 546 type plug rated at 15 A (the higher phase voltage of 230 V allows lower currents for the same power) or occasionally IEC 60309 16 A industrial plugs.