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Specification for Telephone Drop Wire
(Hard Drawn Copper)



SIZE . AWG #22/3 . AWG #22/4
CONDUCTOR . Annealed copper . Annealed copper
Number . 3 . 4
Diameter, mm . 0.643mm +/- 1% . 0.643mm +/- 1 %
Elongation, % . 20 min. . 20 min.
Resistance @ 20oC ohm/km . 57 max. . 57 max.
Resistance unbalance bet. any cond, %. . 4 max. . 4 max.
Insulation Type . PVC . PVC
Insulation Color . red, black, white . red,black,white,green
Thickness, mm . 0.38 average . 0.38 average
0.30 minimum 0.30 minimum
Tensile strength, unaged, kg/mm2 . 1.7 minimum . 1.7 minimum
Elongation,% . 200 minimum . 200 minimum
Insulated dia. . 1.403 mm . 1.403 mm
ASSEMBLY . twisted . twisted
Length of lay, max. . 150 mm . 150 mm
Direction of lay . Left hand . Left hand
Jacket Type . PVC . PVC
Jacket Color . brown . gray
Thickness . 0.38mm average . 0.38mm average
0.30 minimum . 0.30 minimum .
Tensile strength, unaged, kg/mm2 . 1.7 minimum . 1.7 minimum
Elongation,% . 200 minimum . 200 minimum
Jacketed Dia. . 4.05 nominal . 4.4 nominal


Reference:
1. REA PE-71, Specification for Inside Wiring Cable
2. ASTM B3, Standard Specification for Soft or Annealed Copper Wire