Requirements and dimensions for round copper wire covered with cotton or silk or rayon or paper. Braided coverings are not included. Applicable to cotton-covered wires with conductor diameter from 0.150 mm to 5.000 mm, silk- or rayon-covered from 0. 040 mm to 1.600 mm and paper-covered from 0.250 mm to 5.000 mm.Cross References:BS 148BS 698BS 1035-40, 1172-74, 1861, 1954BS 1489BS 2565BS 2689