Specifies the principal and complementary dimensions of brushes and brush-holders, limits and tolerances of principal dimensions and recommended combinations and preferred dimensions of brushes. Also current capacity, terminal types and sizes and details of brush-holders.Cross References:BS 1580:Part 3BS 3643:Part 1BS 4500:Part 1BS 6360IEC 356IEC 413IEC 560IEC 638IEC 773IEC 778