MK 13A 1G DP Switchsocket with neon indicator, designed for use in factories, workshops, schools and around the home in garages and sheds. Unique 3 pin safety shutter. New look frontplate, engineered to fit flush with backbox. Double earth facility available to comply with the regulation 607 of BS 7671 IEE Wiring Regulations. 6x20mm knockouts,box BS 5733:2010 and socket BS 1363 Pt2:1995