Bare Strand Copper Wire

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The bare stranded copper conductors also are known as bare conductor cable, ground copper and bare copper strand. They have two main types, the hard drawn and soft drawn (tinned soft drawn).

The stranded bare copper is the connection of electrical equipment for transmission and distribution (such as transformer, the electric cabinet of the electric furnace), electronic and electrical equipment, and SCR components, and can also be used as ground wire for electrical operation.

Bare Strand Copper Wire Parameter
Normal section Wries No Max resistance at 20℃ Weight
mm² Bare Coated kg/km
0.5 7 36 36.7 5
0.75 7 24.5 24.8 7.3
1 7 18.1 18.2 8.8
1.5 7 12.1 12.2 13.3
2.5 7 7.41 7.56 24
4 7 4.61 4.7 35
6 7 3.08 3.11 51
10 7 1.83 1.84 89
16 7 1.15 1.16 138
25 7 0.727 0.734 220
35 7 0.524 0.529 309
50 19 0.387 0.391 409
70 19 0.268 0.27 609
95 19 0.193 0.195 818
120 37 0.153 0.154 1030
150 37 0.124 0.126 1295
185 37 0.0991 0.1 1610
240 37 0.754 0.0762 2120
300 61 0.601 0.0607 2650
400 61 0.047 0.0475 3517
500 61 0.0366 0.0369 4457

Description of bare earth cable

Conductor: Stranded and bare copper

Conductor class Class 2 or Class 5 to BS EN60228

Min Installation Temperature 0°C

Max Installation Temperature 60°C

Min working Temperature -15°C

Max working Temperature 70°C

Max conductor temperature 90°C

Max short-circuit Conductor temperature 370°C

Mechanical characteristics

Min. Bending Radius 35mm² up to 400mm²= 6 x OD

Application Of Bare Strand Copper Wire
Soft hard drawn bare copper conductor cables have annealed copper conductors class 2 or class 5 are recommended for use as neutrals, in-circuit ground connections and machinery and equipment grounding systems. Soft copper may be used for transformer drop leads or other non-tension hook-up jumpers. Hard drawn bare copper conductor may use earth or overheading power line.

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