CATHODIC PROTECTION CABLE

Cathodic Protection Cable is a specialized electrical cable used to prevent corrosion in metal structures that are underground or underwater, like pipelines and storage tanks. It's built with a copper conductor and highly durable, corrosion-resistant plastic insulation (HMWPE). This cable delivers direct current (DC) as part of a system that sacrifices an anode to protect the main metal object from rust and degradation. Read our Cathodic Protection Cable Buyers Guide.

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CATHODIC PROTECTION CABLE

Looking for a reliable US wire & cable supplier that sells HMWPE Cathodic Protection Cable by the foot? Wire America is a premier industrial cable distributor, providing Cathodic Protection Cable in bulk spools or cut to your exact length with fast shipping to keep your infrastructure projects moving forward smoothly.

Cathodic Protection Cable is a specialized electrical conductor designed specifically to prevent the corrosion of buried or submerged metallic structures, such as pipelines, storage tanks, and well casings. In these systems, the cable carries a low-voltage DC current to anodes, effectively turning the protected structure into a "cathode" to halt oxidation. Given the harsh environments of these applications, the cable features a unique dual-layer insulation system: a primary layer of Fluoropolymer (Halar/ECTFE) for extreme chemical and chlorine resistance, and an outer jacket of High-Molecular Weight Polyethylene (HMWPE) for superior moisture and abrasion protection. This combination ensures that the cable remains operational despite exposure to corrosive gases, brackish water, and acidic soils.

Installation Note: When installing cathodic protection cable, it is vital to avoid any nicks or scratches in the Halar insulation, as even a pinhole leak can allow corrosive gases to reach the copper conductor, leading to rapid failure (the "black wire" effect). When making splices or connections to anodes, always use specialized epoxy-filled splice kits or exothermic welding (Cadweld) to ensure the connection is 100% moisture-proof. Ensure the cable is laid with sufficient slack to account for soil shifting or thermal expansion/contraction in deep-well environments.

Key Features
  • Dual-Layer Protection: Combines a Halar primary insulation with a rugged HMWPE outer jacket to survive the most aggressive chemical environments.
  • Extreme Chemical Resistance: Specifically engineered to resist chlorine, hydrogen sulfide, and other corrosive gases found in deep-well and salt-water applications.
  • High-Purity Copper Conductor: Features soft-drawn stranded copper for maximum electrical efficiency in DC current delivery.
  • Superior Moisture Barrier: The HMWPE jacket provides a near-impenetrable barrier against water ingress and soil-based electrolysis.
  • Abrasion & Impact Resilience: Built to withstand the physical stress of being "pulled" into deep-well anodes or buried in rocky terrain.
  • Direct Burial Rated: Fully certified for long-term subterranean or underwater service without the need for conduit.
  • Industry Standards: Manufactured to meet or exceed ASTM D-1248 and NACE (National Association of Corrosion Engineers) specifications.
Common Applications
  • Pipeline Protection: Connecting sacrificial anodes or impressed current systems to oil, gas, and water pipelines to prevent rust.
  • Deep Well Anode Beds: Serving as the primary lead wire for deep vertical ground beds in municipal and industrial utility zones.
  • Storage Tank Bottoms: Protecting the exterior of underground fuel, chemical, and water storage tanks from soil-side corrosion.
  • Marine & Pier Structures: Preventing the degradation of steel pilings, docks, and offshore platform supports in saltwater.
  • Well Casing Protection: Used in the oil and gas industry to extend the life of steel well casings in corrosive geological formations.
  • Bridge & Infrastructure Support: Protecting reinforcing steel (rebar) in concrete bridges and highway supports from salt-induced corrosion.
  • Submerged Metallic Equipment: Providing a reliable DC path for cathodic systems protecting pumps, valves, and water intake screens.

Resources & Guides

Category_Buying Guide
What is Cathodic Protection Cable?
December 03, 2025
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