4 B&S Twin Sheath Battery Cable
Genuine Australian made TYCAB 4 B&S battery and starter cable, ideal for use in dual battery systems, caravans or any other auxiliary power application up to 108 amp*
Part # Prefix: C2TS-4
Sheath Colours: Black, Red
Lengths: Cut to length by the metre up to 30m.
* Refer Specifications and derating factors
AMP Rating at 30°C:108 amp (JASO D609 derating factors apply)
Tycab Code: AWC296032
Nearest AWG: 4
Strand #/Size: 252/0.32
Nominal Area: 20.26mm²
Insulation Thickness: 1.1mm
Sheath Thickness: 1.0mm
Electrical Resistance at 20°C: 0.9ohm/km
Nominal O.D.: 10.3mm ×18.6mm
Mass (kg/100m): 52.2
Conductor: OXYGEN FREE Plain Copper Wire to AS/NZS 1125
Insulation: V90 degrees Celsius PVC to AS/NZS 3808
Derating Factors for Ambient Temperatures °C per JASO D609
As the ambient temperature increases, the current capacity of the cable decreases as per the following chart.
Ambiebt Temperature °C = Derating Factor for Twin 4 B&S
30°C = 100% capacity (108amp)
40°C = 90% capacity (97.20amp)
50°C = 76% capacity (82.08amp)
60°C = 60% capacity (64.80amp)
70°C = 45% capacity (48.60amp)
Download Sizing Guide
Voltage Drop for Twin 4 B&S Cable:
To calculate the voltage drop of Twin 4 B&S copper cable, use the following formula:
Voltage Drop = Length x Current x 0.017
Length = Total length of cable in metres.
Current = Current draw (amps) through the cable.
Area = Cross sectional area of the copper (in this case 20.26mm²)
Formula only applies to copper at 25°C, voltage drop increases with both ambient and cable temperature, at approx 0.4% per °C.
0.017 - This multiplication factor only applies to copper
Example for Twin 4 B&S:
How much voltage drop over 10m of Twin 4 B&S with a current draw of 108A?
- 10m x 108A x 0.017 = 18.36
Divide this by 20.26 (cross sectional area of 4 B&S - mm²)
You will have a drop of approximatley 0.91 Volts over the 10m length