BS 196:1961 Specification for protected-type non-reversible plugs, socket-outlets cable-couplers and appliance-couplers with earthing contacts for single phase a.c. circuits up to 250 volts
Ratings. 5,15, 30 A, includes single- and double-pole fused plugs for ring main circuits. Dimensions for interchangeability, construction, tests, gauge details and dimensions. Non-reversible feature essential. Appendix on: complete system of key and keyway positions for non-interchangeability between different supply systems, applications.
BS 196:1961 history
1961BS 196:1961 Specification for protected-type non-reversible plugs, socket-outlets cable-couplers and appliance-couplers with earthing contacts for single phase a.c. circuits up to 250 volts