BS 2755:1970

Co-operating organizations
Foreword
Specification
1 Scope
2 General
3 Definitions
4 Information to be supplied by the purchaser
5 Freedom from defects
6 Chemical composition
7 Identification of material
8 Joints
9 Stranding
10 Dimensions, tolerances and masses
11 Selection of test samples
12 Mechanical tests
13 Electrical resistance tests
14 Retests
15 Certificate of compliance
16 Inspection
17 Facilities for testing
Appendix
A Factors for correcting resistance at various
    temperatures
B Notes on the calculation of Tables 4 and 6
Tables
1 Lay ratios
2 Strength of stranded conductors
3 Physical, mechanical and electrical properties of
    solid circular hard-drawn copper wire
4 Physical, mechanical and electrical properties of
    standard hard-drawn copper stranded conductors
5 Physical, mechanical and electrical properties of
    solid circular hard-drawn copper-cadmium wire
6 Physical, mechanical and electrical properties of
    standard hard-drawn copper-cadmium stranded
    conductors
7 Factors for correcting resistances. Hard-drawn high
    conductivity copper of conductivity 97 % I.A.C.S.
8 Factors for correcting resistances. Hard-drawn
    copper-cadmium of conductivity 80 % I.A.C.S.

Specifies requirements for hard-drawn copper and copper-cadmium stranded conductors and half-hard copper dropper wires for overhead electric traction systems. Includes chemical composition, dimensions and tolerances, mechanical and electrical tests.