Cable Derating Factors

Derating Factors for Bundling of Single Core Cables per JASO D609

As the number of cables bundled together increases, the current capacity of each cable in the bundle decreases as per the following chart.
We will use 6 B&S cable as an example.
Cable Bundle Qty = Derating Factor for 6 B&S
  • 1 x Cable = 100% capacity (103amp)

  • 2 x Cables = 80% capacity (82amp)

  • 3 x Cables = 70% capacity (72amp)

  • 4 x Cables = 60% capacity (62amp)

  • 5 x Cables = 55% capacity (57amp)

  • 6 x Cables = 50% capacity (52amp)

  • 7 x Cables = 50% capacity (52amp)


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 6 B&S 
  • 30°C = 100% capacity (103amp)

  • 40°C = 90% capacity (93amp)

  • 50°C = 76% capacity (78amp)

  • 60°C = 60% capacity (62amp)

  • 70°C = 45% capacity (46amp)