BS 4927-1:1974

Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 General requirements and test conditions
4 Conductor
5 Covering materials
6 Elongation of covered conductor
7 Packaging
Appendices
A Measurement of conductor diameter and overall
   diameter
B Electrical resistance
Tables
1 Tolerances on conductor diameter
2 Temperature correction factors
3 Resistance ratios
4 Dimensions, resistances and elongation of cotton-
   covered conductors
5 Dimensions, resistances and elongation of silk-
   covered and rayon-covered conductors
6 Dimensions, resistances and elongation of paper-
   covered conductors

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.