Copper PV Wire 2000V UL4703 | Solar Cable Made in USA

Copper PV Wire 2000V UL4703 — Made in USA | In Stock | Ships Same Day

Photovoltaic Cable LLC offers UL4703-certified Copper PV Wire rated at 2,000 Volts, specifically engineered for connecting solar panels in residential, commercial, and utility-scale photovoltaic systems. Manufactured in North America to the highest industry standards, our copper PV wire is the preferred choice of professional solar installers across the USA.

Available sizes

Choose from four conductor sizes to match your system requirements:

• 6 AWG 2000V — ideal for high-current main feeder runs
• 8 AWG 2000V — commonly used for string-to-combiner connections
• 10 AWG 2000V — the most popular size for residential and commercial systems
• 12 AWG 2000V — suitable for short module-to-module connections

All sizes available in Black and Red, in reel lengths of 500, 1,000, 2,500, and 5,000 feet.

Technical specifications

Why 2000V is the right choice

• Higher voltage margin — reduces risk of insulation breakdown over time
• Longer string lengths — allows more panels per string, reducing overall system cost
• NEC compliant — accepted for both grounded and ungrounded PV systems
• Dual-rated — listed as UL4703, RHW-2, and USE-2 for maximum installation flexibility
• Made in USA — manufactured in North America to ASTM standards
• 19-strand conductor — superior flexibility for routing through conduit and raceways

Recommended applications

• Residential rooftop solar systems (6, 8, 10, 12 AWG)
• Commercial rooftop PV installations
• Ground-mount solar arrays of all sizes
• Module-to-module and string-to-combiner connections
• Combiner box to inverter DC feeder runs
• Both grounded and ungrounded PV systems per NEC Article 690

Not sure which AWG size you need?

Use our free Voltage Loss Calculator to determine the correct gauge and reel length for your system before ordering. Enter your string current, distance, and acceptable voltage drop — and get an instant recommendation.

Shipping & availability

All sizes are in stock and ship same day from three U.S. fulfillment centers: LaPorte, Texas, Rancho Dominguez, California. Pick-up available at all locations. Most orders arrive within 2-5 business days. 

Frequently asked questions

What is the difference between 2000V and 600V PV wire?
The 2000V rating provides a higher insulation safety margin, allows longer string configurations, and is increasingly required by utilities and AHJs. For a detailed comparison, see our guide: 2000V vs 600V PV Wire.

What AWG size do I need for my solar installation?
The correct AWG depends on your string current, cable length, and acceptable voltage drop. As a general guideline: 12 AWG for short module-to-module runs, 10 AWG for most residential string connections, and 8 or 6 AWG for higher-current commercial applications. Use our Voltage Loss Calculator for a precise recommendation.

Is this wire rated for direct burial?
Yes. UL4703-listed PV wire is rated for direct burial, conduit, and free-air installation per NEC Article 690 guidelines.

Is this wire compatible with MC4 connectors?
Yes. Our copper PV wire in 10 AWG and 12 AWG is compatible with our MC4 Solar Panel Connectors, available separately in 50-pair bags.

Questions about sizing or volume pricing? Call +1 305 842-6291 or email sales@photovoltaiccable.com