Cable current rating

Estimated continuous current rating for shipboard cables, including ambient temperature, duty-cycle and cable-grouping correction factors. Indicative figures — verify against the applicable class rules for a real installation.

Cable cross-section [mm²]Assumed overall cable diameter: – mm

Ambient temperature

35 °C40 °C45 °C50 °C55 °C60 °C65 °C70 °C75 °C80 °C85 °C

Type of service

S1 — continuousS2 — half-hour serviceS2 — hour serviceS3 — intermittent service, 40%

Maximum conductor temperature (insulating material)

60 °C — general purpose PVC70 °C — heat resisting PVC85 °C — butyl rubber90 °C — EPR / XLPE / HEPR / HF variants95 °C — silicone rubber / mineral insulation

Cables in a group/bundle

over 6 up to 6

Cores in cable

one core two cores three / four cores

The rated operating temperature of the selected insulating material should be at least 10 °C higher than the maximum ambient temperature likely to exist in the space where the cable is installed.

Current rating

– A

Daniel Czarkowski

Electrical, Instrumentation & Telecom engineering services for the Oil & Gas offshore sector.

Contact

ul. Kaszubska 7
84-208 Kielno, Poland
NIP 591-111-06-87

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