Cable Options
Bare Copper Wire and Cable – Made in the USA with Superior Conductivity
Philatron Wire and Cable proudly manufactures bare copper wire and cable in the United States to meet the demands of modern electrical systems. We are an industry leader in high-conductivity copper wire solutions, offering a wide range of sizes and flexibility options for use in power transmission, grounding, utility, military, and industrial applications.
Our bare wire products are made from 99.999% pure copper and are available in soft annealed, medium-hard, and hard-drawn constructions, meeting or exceeding ASTM and European standards. Whether your project requires precision, extra flexibility, or high-strength copper stranding, Philatron delivers unmatched performance and quality.
What is Bare Copper Wire?
Bare copper wire refers to a solid or stranded copper conductor that has not been insulated or coated. It is the most basic form of wire used in electrical systems and is preferred for its excellent conductivity, corrosion resistance, and mechanical durability.
Available in various tempers and stranding classes, bare copper wire can be used for grounding, bonding, and high-voltage transmission applications. Philatron offers both solid bare wire and stranded bare copper wire, depending on the level of flexibility and strength required.
Applications of Bare Copper Wire
Philatron’s bare copper wire and cable are trusted across a wide array of industries and use cases, including:
- Overhead power distribution lines
- Electrical transmission systems
- Earth grounding for renewable energy systems
- Commercial and industrial grounding grids
- Military communications and power systems
- Transportation and rail electrification
- Substation and switchgear grounding
- Battery bonding and backplane connections
- Solar PV grounding systems
Features and Benefits
- 99.999% Pure, Oxygen-Free Copper
Ensures maximum electrical conductivity and performance for critical systems. - Extra-Flexible Large Format Stranding
Our Class K and Class M wires offer superior flexibility ideal for dynamic or high-vibration environments. - Wide Range of Sizes
We manufacture bare copper wire from 34 AWG to 4000 MCM, meeting diverse industry demands. - Conforms to ASTM and IEC Standards
Manufactured to ASTM B1, B2, B3, B8, B787 standards and European specifications for international projects. - Domestic Manufacturing
All copper wire is 100% made in the USA, ensuring traceability, shorter lead times, and consistent quality.
ASTM Stranding Classes Available
Philatron offers a full spectrum of ASTM stranding classes, designed for specific performance needs:
| Class | Description | Flexibility Level |
| AA | Solid or concentric-lay | Rigid |
| A | Concentric-lay | Semi-Rigid |
| B | Most common for power conductors | Moderate |
| C | Greater flexibility than Class B | Flexible |
| G, H | Enhanced for special applications | Moderate–High |
| I | Flexible (24 AWG) | High |
| K | Extra Flexible (30 AWG) | Very High |
| M | Very Flexible (34 AWG) | Maximum Flexibility |
Available Constructions
Our bare copper wire is available in the following construction types:
- Hard-Drawn Copper Wire – Maximum tensile strength for overhead and structural use
- Medium-Hard Copper Wire – Balanced performance for general use
- Soft Annealed Copper Wire – Maximum ductility for easy bending and forming
- Bare Wire Options and Finishes
- Solid or Stranded
- Smooth or Bunched Stranding
- Tinned, Nickel-Plated, or Bare Finish
- Coil, Reel, or Custom Packaging
- Cut-to-length or bulk spools
European Standard Bare Copper Stranding
Philatron supports European-style bare copper configurations for customers with international compliance needs. We meet or exceed specifications including IEC 60228 and other applicable standards for conductor sizing, resistance, and flexibility.
Common Industries Served
Our bare copper wire is trusted by professionals in:
- Electrical Contracting & Utility Services
- Government & Military Defense Contractors
- OEMs in Industrial Manufacturing
- EV & Renewable Energy Companies
- Data Centers and Infrastructure Projects
- Rail, Aviation, and Marine Transportation
- Aerospace and Satellite Communication
Frequently Asked Questions
Q: Can bare copper wire be used outdoors?
- A: Yes, bare copper wire is often used outdoors for grounding and overhead applications. However, environmental exposure should be considered to prevent corrosion in highly polluted or coastal areas.
Q: What is the difference between Class B and Class K wire?
- A: Class B offers moderate flexibility and is commonly used in fixed installations. Class K wire has a much higher strand count, providing extra flexibility for dynamic or tight-space applications.
Q: Is bare wire safe to use in residential systems?
- A: Bare copper wire is typically used as a ground wire in residential systems, not for insulated power conductors.
Q: Do you offer custom fabrication or private label options?
- A: Yes, Philatron offers custom cable fabrication, private labeling, and made-to-order configurations upon request.
Request a Quote or Sample
Need a custom bare copper wire for your next project? We can help. Whether you need bare wire in bulk, special stranding classes, or rapid delivery for a government contract, Philatron delivers. Complete our Custom Cable Form for a quick quote and lead time.
Why Philatron Bare Copper Wire?
With over 51+ years of experience, Philatron Wire and Cable continues to lead in innovation, quality, and performance. We are not just a supplier—we are your partner in power. Trust Philatron for high-quality bare copper wire, proudly made in America.