Specifies dimensional, construction and test requirements for plugs and sockets for flexible cables having three power and one pilot contacts and a scraping earth contact.Cross References:BS 18BS 229BS 240BS 903:Part C2 BS 903:Part C4BS 1134:Part 1BS 2782:Part 1:Method 141BS 2782:Part 2:Methods 220 and 221BS 2782:Part 2:Method 230ABS 2782:Part 3:Methods 320A to 320F BS 2782:Part 3:Method 335ABS 2782:Part 3:Method 359 BS 2782:Part 4:Methods 430A to 430DBS 4168BS 4464BS 4683:Part 1BS 4683:Part 2BS 5501:Part 1BS 5501:Part 5BS 5901Health and Safety at Work etc. Act 1974Mines and Quarries Act, 1954