105C Heat Resistant Industrial 4x25mm2 Copper XLPE Insulated Power Cable

Product Overview

Standard XLPE cable is rated 90 C, and in a furnace hall, a boiler room or above a steel plant soaking pit the ambient air alone can push the conductor past that figure. This four core 25mm2 cable uses a heat stabilised XLPE compound with an antioxidant package that holds mechanical properties at 105 C continuous, so the current rating can be applied without the heavy derating factor a 90 C cable would need in the same location.

The insulation is extruded to 0.9 mm nominal and cured under pressure, which gives a dense, void free wall. The oversheath is a heat and oil resistant PVC that resists the hydraulic oil, grease and cleaning agents found around plant equipment, and stays flexible at low temperature for winter start up.

Thermal ageing behaviour is what separates a genuine heat resistant cable from a relabelled one. We verify it with a seven day air oven test at 135 C and report tensile and elongation retention, so your maintenance team can compare the delivered cable against the specification rather than the datasheet wording.

Technical Specifications

Key Advantages

• 105 C continuous rating reduces derating in hot plant areas compared with 90 C cable.
• Heat stabilised XLPE keeps tensile strength after seven days at 135 C.
• Oil resistant sheath survives hydraulic oil, grease and wash down chemicals.
• Four core 25mm2 handles motor and distribution loads in one pull.
• Ageing test data supplied so maintenance can verify the delivered product.

Typical Applications

• Steel plant furnace halls and soaking pit areas
• Boiler rooms, turbine halls and CHP plants
• Foundries, glass works and ceramic kiln buildings
• Compressor houses and hydraulic power units
• Cement plant kiln and cooler sections

Quality Assurance and Test Data

Heat ageing, oil resistance and insulation resistance are tested per batch, and conductor resistance is recorded drum by drum. Our engineers can run a temperature corrected current rating for your ambient and grouping conditions so the 25mm2 section is neither oversized nor marginal. The heat resistant 4x25mm2 copper cores are annealed before insulation, so the cable still terminates cleanly after years of service at 105 C.

Ordering and Delivery Notes

Hot area orders should start with a temperature survey rather than a cable size. Send the ambient readings, the grouping on tray and the load profile, and we will return a current rating corrected for 105 C operation together with the derating assumptions. The heat resistant 4x25mm2 copper cable is then supplied with the ageing report attached, which is often what the plant maintenance auditor asks for first.

Selection and Test Summary

• A 105C heat resistant rating only helps if the lugs are rated the same, so we quote matching lugs with the cable.
• In a furnace hall the 4x25mm2 copper runs are usually short and hot, which is exactly where the 105C heat resistant compound earns its place.
• Our engineers confirm ambient and grouping before the XLPE Insulated Power Cable section is locked in.
• For an industrial furnace wiring package the 4x25mm2 copper cable can be supplied in 100 m coils for panel work.
• For a kiln area the industrial furnace wiring route uses the 105C heat resistant cable on tray with a heat shield above it.
• Where a plant replaces PVC cable after repeated failures, the XLPE Insulated Power Cable with a 105C rating is often the simplest upgrade.
• For a boiler house the 4x25mm2 copper cable is often run in conduit, where the 105C heat resistant rating keeps the derating modest.
• A 105C heat resistant drum is labelled with its ageing report number, so the XLPE Insulated Power Cable can be traced at the plant audit.

Frequently Asked Questions

Q: Why choose 105 C rated cable instead of 90 C cable?
A: In hot areas a 90 C cable must be derated, which often forces a larger section. A 105 C rated cable keeps the 25mm2 section usable at the same load, saving copper and space.

Q: Is the 105 C rating a conductor temperature or an ambient temperature?
A: It is the maximum continuous conductor temperature; ambient limits depend on installation and grouping, and we calculate the derating for your site.

Q: Can the cable be used in cable tray in a furnace hall?
A: Yes, with the heat resistant sheath it is suitable for tray and conduit, provided radiant heat from the furnace is shielded.

Q: Do you provide test reports for the ageing performance?
A: Yes, each batch is accompanied by a 135 C air oven ageing report with tensile and elongation retention values.

Q: Can you confirm the current rating at 105 C for our grouping?
A: Yes. We calculate the rating for the specified ambient, grouping and installation method, then issue the derating sheet with the quotation for the 4x25mm2 copper cable.

Share your ambient temperature, grouping and load, and we will return a derating calculation plus price for this 105 C heat resistant cable.