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Coil of 25 ft 12-gauge nickel-plated copper wire with mica insulation

SUPCO

SUPCO 25 ft 12GA 450°C Hi-Temp Conductor Wire

SKU CH-EVFB-SRS6E

25-foot 12-gauge nickel-plated copper conductor wire with mica insulation rated to 450 °C / 842 °F for ovens, furnaces and high-heat equipment

  • Product typeConductor Wire
  • 25-foot roll gives ample length for custom high-temperature wiring runs
  • 12 AWG nickel-plated copper core delivers 56 A capacity with corrosion resistance
  • Mica insulation rated to 450 °C / 842 °F withstands extreme oven and furnace heat
  • 300 V rating supports up to 13 kW at 240 V or 6.5 kW at 120 V
  • Flexible single-conductor design simplifies tight routing in heating equipment and HVAC systems

High-Temperature Conductor Wire

The Supco RP2512NG is a 25-foot roll of single-conductor 12 AWG nickel-plated copper wire designed for commercial and industrial wiring in extreme heat. It suits technicians repairing ovens, furnaces, kilns, or HVAC control panels where standard insulation would fail.

56A Capacity and 450°C Rating

Mica insulation provides continuous operation up to 450°C (842°F) with a 300V voltage rating. The wire handles up to 56 amps, delivering 13KW at 240V or 6.5KW at 120V, but it is a single conductor without a ground or neutral, so it cannot complete a circuit alone.

Universal Replacement Application

This bulk roll replaces no specific OEM part number, serving instead as universal high-temperature wire for custom repairs and retrofits. Installers must cut and terminate the length required, verifying compatibility with their specific equipment before use.

How it compares

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Price $48.99
Pricier than about 90% of the 2,144 comparable items (median $20.99).

Specifications

Product
Product typeConductor Wire

Questions about this item

Will the 12 AWG nickel-plated copper core and 300 V rating let me keep my existing 120 V or 240 V heating element connections?

Yes. The wire is rated 300 V and carries up to 56 A, so it works on both 120 V circuits (6.5 kW max) and 240 V circuits (13 kW max) with your current elements.

How can I confirm the mica insulation is holding up at 450 °C after I install it?

With power off, visually inspect the full length for discoloration, cracking or brittleness; then power the appliance and verify the element reaches temperature without tripping breakers or showing hot-spot smells.

Does the 25-foot roll include terminals or connectors, or must I buy them separately?

The roll supplies only the single-conductor wire; you will need to purchase suitable high-temperature terminals, crimps or ceramic connectors separately for your repair.

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