[edit] UK Dorman Smith

The plugs and sockets were rated at 13 amperes and were one ofhd64180rp8

 the early competing types for use on ring main circuits. They were never popular in private houses but were widely deployed in prefabricated houses and council housing. The BBC also usedm5m5256bp-10l

 them. supplied the sockets to local authorities at very low cost, with the intention of making money out of the sales of plugs typically priced at 4 times the price of a Type G plug. ItILX232D

 is not known exactly when ceased manufacturing the plugs and sockets but some local authorities continued to use them in new installations until the late 1950s. Many D&S sockets were still in use until the early 1980s, although theHM401

 difficulty in obtaining plugs for them after around 1970 often forced their users to replace them with Type G sockets. This generally violated local authority regulations on alterations to council housing. The plug suffered from a serious design fault: the live pinTT162N12KOF

 was a fuse which screwed into the plug body and tended to come unscrewed on its own in use. A fuse that worked loose could end up protruding from the socket, electrically live and posing a shock hazard, when the plug was removed.