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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 : CPC250
SKU : CPC250-250
This 250 MCM HMWPE Cathodic Protection Cable is a specialized, single-conductor wire engineered for use in impressed current cathodic protection (ICCP) systems. It serves as a rugged, high-capacity link between rectifiers and anodes, designed to survive direct burial in aggressive soils or submersion in fresh, brackish, or salt water.
Standard power cables are not equipped to handle the unique electrochemical challenges of cathodic protection. The High Molecular Weight Polyethylene (HMWPE) insulation on this 250 MCM conductor is specifically formulated to resist the corrosive gases—such as chlorine and hydrogen—produced at the anode bed.
Chemical Stability: The HMWPE jacket is highly resistant to acids, alkalis, and salts common in industrial and marine environments.
Direct Burial Performance: Engineered for "set it and forget it" reliability when buried directly in earth, eliminating the cost and labor of conduit where permitted.
Mechanical Strength: HMWPE offers superior resistance to abrasion and "cut-through" damage, ensuring the insulation remains intact during the rigors of heavy-duty installation.
High-Purity Copper: Features soft-drawn, stranded bare copper for maximum electrical efficiency and a lower voltage drop over long feeder runs.
Conductor Size: 250 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: 255 Amps (@ 75°C)
Standard Color: Black (UV Stabilized)
Approvals: ASTM D-1248, ICEA S-95-658
Transmission Pipelines: Used as feeder cables for both positive and negative circuits in oil, gas, and water pipeline systems.
Industrial Tank Farms: Ideal for protecting the bottoms of large-scale above-ground and underground storage tanks.
Marine & Coastal Works: Protection of steel sheet piles, bulkheads, and jetty structures in saltwater environments.
Ground Bed Feeds: The preferred choice for wiring deep-well or surface-ground-bed anode arrays.
Technical Note: To ensure the design life of the protection system, avoid damaging the insulation during pull-in or backfilling. Any breach in the HMWPE jacket allows the copper conductor to corrode rapidly once energized. In high-chlorine environments, a dual-insulated construction (HALAR/HMWPE) is recommended.
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Copper |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 0.89 in. / 22.60 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | (HMWPE) High Molecular Weight Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 255 |
| 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 | 0.925 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 : CPC250
SKU : CPC250-250
Parent SKU : CPC250
SKU : CPC250-250
This 250 MCM HMWPE Cathodic Protection Cable is a specialized, single-conductor wire engineered for use in impressed current cathodic protection (ICCP) systems. It serves as a rugged, high-capacity link between rectifiers and anodes, designed to survive direct burial in aggressive soils or submersion in fresh, brackish, or salt water.
Standard power cables are not equipped to handle the unique electrochemical challenges of cathodic protection. The High Molecular Weight Polyethylene (HMWPE) insulation on this 250 MCM conductor is specifically formulated to resist the corrosive gases—such as chlorine and hydrogen—produced at the anode bed.
Chemical Stability: The HMWPE jacket is highly resistant to acids, alkalis, and salts common in industrial and marine environments.
Direct Burial Performance: Engineered for "set it and forget it" reliability when buried directly in earth, eliminating the cost and labor of conduit where permitted.
Mechanical Strength: HMWPE offers superior resistance to abrasion and "cut-through" damage, ensuring the insulation remains intact during the rigors of heavy-duty installation.
High-Purity Copper: Features soft-drawn, stranded bare copper for maximum electrical efficiency and a lower voltage drop over long feeder runs.
Conductor Size: 250 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: 255 Amps (@ 75°C)
Standard Color: Black (UV Stabilized)
Approvals: ASTM D-1248, ICEA S-95-658
Transmission Pipelines: Used as feeder cables for both positive and negative circuits in oil, gas, and water pipeline systems.
Industrial Tank Farms: Ideal for protecting the bottoms of large-scale above-ground and underground storage tanks.
Marine & Coastal Works: Protection of steel sheet piles, bulkheads, and jetty structures in saltwater environments.
Ground Bed Feeds: The preferred choice for wiring deep-well or surface-ground-bed anode arrays.
Technical Note: To ensure the design life of the protection system, avoid damaging the insulation during pull-in or backfilling. Any breach in the HMWPE jacket allows the copper conductor to corrode rapidly once energized. In high-chlorine environments, a dual-insulated construction (HALAR/HMWPE) is recommended.
| Wire Size (AWG/MCM) | 250 MCM |
| Conductor Material | Copper |
| Conductor Type | Stranded |
| Strand Count | 37 |
| Outer Diameter (OD) (in/mm) | 0.89 in. / 22.60 mm |
| Conductor Count | 1 |
| Shield | Unshielded |
| Insulation Type | (HMWPE) High Molecular Weight Polyethylene |
| Voltage Rating | 600V |
| Ampacity Rating | 255 |
| 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 | 0.925 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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250 MCM is a heavy-duty Main Positive Feeder or Negative Return Header. It is designed for utility-scale Impressed Current (ICCP) systems. This cable is typically the "Main Artery" that connects the rectifier to large-scale anode groundbeds or collects the return current from massive industrial structures like power plant intake systems and large-diameter interstate pipelines.
The shift to 250 MCM is almost always a requirement for extreme distance power delivery. On massive infrastructure projects, the distance from the rectifier can span miles. 250 MCM provides the massive copper volume necessary to achieve near-zero resistance, ensuring that the "Driving Voltage" is not lost to heat and that the structure stays at its target protective potential.
TIP: 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.
Yes. Our High Molecular Weight Polyethylene (HMWPE) insulation is scaled for large-diameter conductors. It remains the industry standard for direct burial and submerged applications because it provides a non-porous, chemically inert barrier. It is specifically formulated to resist the chlorine and hydrogen gases produced at high-output anode sites.
Absolutely. 250 MCM is frequently specified for deep-water piling protection and offshore platform grids. Because these projects involve high current and extreme environmental stress, the mechanical toughness of the HMWPE jacket and the massive conductivity of the 250 MCM core are essential for a 40+ year maintenance-free lifespan.
While 250 MCM is rated for approximately 255 Amps 75°C in typical direct burial conditions, it is rarely pushed to its thermal limit. In CP design, contractors use 250 MCM for electrical efficiency. By keeping the resistance low, the system consumes less power at the rectifier and ensures uniform current distribution across the entire protected 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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