From $0.20/ft
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Solid THHN/THWN-2 WireFrom $0.20/ft -
Solid THHN/THWN-2 WireFrom $0.20/ft - Solid THHN/THWN-2 WireFrom $0.20/ft
- Solid THHN/THWN-2 WireFrom $0.20/ft
Parent SKU : CPC500
SKU : CPC500-250
This 500 MCM HMWPE Cathodic Protection Cable is a specialized single-conductor wire designed specifically for deep-well or surface-ground-bed cathodic protection systems. Engineered for direct burial in harsh soil conditions or submerged in fresh, brackish, or salt water, this cable serves as the critical link between rectifiers and anodes.
Unlike standard power cables, cathodic protection wire must withstand constant exposure to corrosive gases, moisture, and varying pH levels. The High Molecular Weight Polyethylene (HMWPE) insulation is specifically formulated for maximum mechanical toughness.
Chemical & Moisture Barrier: HMWPE insulation provides a rugged barrier against salts and corrosive chemicals found in industrial soil environments.
Mechanical Durability: Offers superior resistance to abrasion and "cut-through" damage during the backfilling process.
Direct Burial Rated: Engineered to be buried directly in the earth without the need for conduit.
High Conductivity: Features high-purity, soft-drawn stranded bare copper for efficient current discharge.
Conductor Size: 500 MCM (kcmil)
Conductor Material: Stranded Bare Copper
Insulation Material: High Molecular Weight Polyethylene (HMWPE)
Voltage Rating: 600V
Temperature Rating: 75°C (167°F)
Amp Rating: 365 Amps (@ 75°C)
Standard Color: Black (UV Resistant)
Approvals: ASTM D-1248, ICEA S-95-658
Pipeline Protection: Anode leads and feeder cables for oil, gas, and water pipelines.
Storage Tanks: Connection for sacrificial or impressed current anodes.
Marine Infrastructure: Protection for pier pilings, bulkheads, and ship hulls.
Deep Well Ground Beds: Reliable submerged performance in water and coke breeze.
Technical Note: Always inspect the insulation before burial. Even small nicks in the HMWPE jacket can lead to concentrated copper corrosion at the breach point. For environments with extreme chlorine or hydrocarbon presence, consider a dual-insulated HALAR/HMWPE construction.
| Wire Size (AWG/MCM) | 500 MCM |
| Conductor Material | Copper |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 1.14 in. / 28.95 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | (HMWPE) High Molecular Weight Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 365 |
| Direct Burial Rating | Yes |
| Submersible | Yes |
| Flexibility Rating | Very Low |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 75°C |
| Standards | ASTM B-8 Stranded Copper Conductors ASTM-D-1248 ICEA S-61-402 NEMA WC-5 Type I Class C Category 5 Grades E-5 and J-I HMWP |
| Miscellaneous Information | The data shown is approximate and subject to standard industry and manufacturer tolerances |
| Common Uses |
|
| Weight per Foot | 1.77 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
Parent SKU : CPC500
SKU : CPC500-250
Parent SKU : CPC500
SKU : CPC500-250
This 500 MCM HMWPE Cathodic Protection Cable is a specialized single-conductor wire designed specifically for deep-well or surface-ground-bed cathodic protection systems. Engineered for direct burial in harsh soil conditions or submerged in fresh, brackish, or salt water, this cable serves as the critical link between rectifiers and anodes.
Unlike standard power cables, cathodic protection wire must withstand constant exposure to corrosive gases, moisture, and varying pH levels. The High Molecular Weight Polyethylene (HMWPE) insulation is specifically formulated for maximum mechanical toughness.
Chemical & Moisture Barrier: HMWPE insulation provides a rugged barrier against salts and corrosive chemicals found in industrial soil environments.
Mechanical Durability: Offers superior resistance to abrasion and "cut-through" damage during the backfilling process.
Direct Burial Rated: Engineered to be buried directly in the earth without the need for conduit.
High Conductivity: Features high-purity, soft-drawn stranded bare copper for efficient current discharge.
Conductor Size: 500 MCM (kcmil)
Conductor Material: Stranded Bare Copper
Insulation Material: High Molecular Weight Polyethylene (HMWPE)
Voltage Rating: 600V
Temperature Rating: 75°C (167°F)
Amp Rating: 365 Amps (@ 75°C)
Standard Color: Black (UV Resistant)
Approvals: ASTM D-1248, ICEA S-95-658
Pipeline Protection: Anode leads and feeder cables for oil, gas, and water pipelines.
Storage Tanks: Connection for sacrificial or impressed current anodes.
Marine Infrastructure: Protection for pier pilings, bulkheads, and ship hulls.
Deep Well Ground Beds: Reliable submerged performance in water and coke breeze.
Technical Note: Always inspect the insulation before burial. Even small nicks in the HMWPE jacket can lead to concentrated copper corrosion at the breach point. For environments with extreme chlorine or hydrocarbon presence, consider a dual-insulated HALAR/HMWPE construction.
| Wire Size (AWG/MCM) | 500 MCM |
| Conductor Material | Copper |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 1.14 in. / 28.95 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | (HMWPE) High Molecular Weight Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 365 |
| Direct Burial Rating | Yes |
| Submersible | Yes |
| Flexibility Rating | Very Low |
| Sunlight Resistance Rating | Yes |
| Temperature Rating | 75°C |
| Standards | ASTM B-8 Stranded Copper Conductors ASTM-D-1248 ICEA S-61-402 NEMA WC-5 Type I Class C Category 5 Grades E-5 and J-I HMWP |
| Miscellaneous Information | The data shown is approximate and subject to standard industry and manufacturer tolerances |
| Common Uses |
|
| Weight per Foot | 1.77 lb |
In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.
You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.
Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).
You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.
Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.
Orders on any items with a material value of $50 or less are non-returnable.
Get notified when this product is back in stock
Physical Specifications
Technical Specifications
Usage & Installation:
Packaging & Dimensions:
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500 MCM (500 kcmil) is the ultimate Main Positive Feeder or Negative Return Header. It is the largest standard gauge used in Impressed Current (ICCP) systems. It serves as the primary "Trunk Line" that carries massive amounts of protective current from high-output rectifiers to extensive anode groundbeds, or acts as the central collection point for the return current from large-scale buried infrastructure.
The shift to 500 MCM is almost exclusively about Voltage Drop Management. On massive projects—like a pipeline hub or a coastal power facility—the distance and the current load are so high that smaller cables would create too much resistance. 500 MCM provides the massive copper volume necessary to achieve nearly zero resistance, ensuring that every part of the structure reaches the required protective potential (-850mV).
Yes. Our High Molecular Weight Polyethylene (HMWPE) jacket is specifically engineered for both direct burial and permanent water submersion. It is a non-porous, chemically inert barrier that prevents saltwater or corrosive soil moisture from reaching the copper. This is critical for protecting offshore platforms, major bridge footings, and submerged dock infrastructure.
While 500 MCM has a typical ampacity rating of 365 Amps @ 75°C in direct burial, it is almost never pushed to its limit in CP applications. The size is selected for Electrical Efficiency. By running high current through such a massive conductor, you minimize heat and line loss, which reduces the total energy consumption of the rectifier and ensures the most stable protection for the buried asset.
NOTE: Cathodic Protection systems are highly site-specific. Before selecting your cable gauge, we strongly recommend consulting with a NACE-certified Corrosion Engineer or a licensed CP installer to verify your voltage drop calculations and soil resistivity requirements.
Cathodic Protection cable is a specialized electrical conductor used to prevent corrosion in buried or submerged metallic structures, such as pipelines, storage tanks, and pier pilings. It connects the structure to an anode system, carrying the direct current (DC) necessary to neutralize the electrochemical process that causes rust and decay.
HMWPE stands for High Molecular Weight Polyethylene. It is the "outer shell" of most CP cables. It is used because it is incredibly tough, moisture-resistant, and has high dielectric strength, allowing the cable to be buried directly in a variety of soil types without a conduit.
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