Specifies envelope and fixing dimensions and dimensions of certain components. For voltages up to 36 kV and currents up to 2500 A. Requirements for boxes in which the cores of cables terminate and are connected to terminals. For paper or extruded insulated cables with copper or aluminium conductors and lead or aluminium sheaths.Cross References:BS 91BS 148BS 171BS 223BS 381CBS 771BS 923BS 1400BS 1858BS 1872BS 3643BS 3692BS 3816BS 4320BS 4963BS 5622:Part 1BS 6121BS 6346BS 6480Replaces BS 2562:Part 1:1955 and BS 2562:Part 2:1959.