Copper PV Wire 2000 Volts 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.

Since it is manufactured in North America to the highest industry standards, our copper PV wire is the preferred choice of professional solar installers across the USA.

Furthermore, because it carries a 2000V rating, this wire provides an additional safety margin compared to standard 600V cable. As a result, it is the right choice for both grounded and ungrounded PV systems under NEC Article 690.

---

The Most Versatile Copper PV Wire on the Market

One of the key advantages of our copper PV wire is its wide range of available sizes and configurations. Specifically, we offer four conductor sizes — 6, 8, 10, and 12 AWG — so that installers can select the exact gauge required for their system. Moreover, each size is available in both Black and Red colors, as well as in reel lengths of 500, 1,000, 2,500, and 5,000 feet. Consequently, whether you are wiring a small residential rooftop or a large commercial ground-mount array, you will find the right configuration in this collection.

---

Available Sizes & Starting Prices

Choose from four conductor sizes to match your system requirements:

1. - 6 AWG 2000V — ideal for high-current main feeder runs
2.    8 AWG 2000V — commonly used for string-to-combiner connections
3.   10 AWG 2000V  — the most popular size for residential and commercial systems
4.   12 AWG 2000V  — suitable for short module-to-module connections

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

---

Technical Specifications

Spec / Detail
Conductor / 19-Strand Copper per ASTM B-3, B-8
Voltage Rating / 2,000 Volts (2kV)
Certifications / UL 4703 — RHW-2 (UL 44) — USE-2 (UL 854)
Insulation / Cross-Linked Polyethylene (XLPE)
Temperature Rating / −40°C to +90°C (wet and dry)
Colors / Black — Red
Reel Sizes / 500 — 1,000 — 2,500 — 5,000 feet
UV Resistance / Yes — sunlight and ozone resistant
Compliance / RoHS Compliant — Gasoline and Oil Resistant II
Origin / Manufactured in North America

---

Why UL4703 2000V PV Wire Is the Right Choice

When selecting wire for your solar installation, the voltage rating matters significantly. In particular, 2000V rated wire offers key advantages over 600V alternatives. As a result, it is now the standard specification for most new commercial and utility-scale projects:

- 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 copper conductor — superior flexibility for routing through conduit and raceways

Why the 2000V Rating Matters for Your Project

Although 600V wire was once the standard, the solar industry has largely transitioned to 2000V as the preferred specification. This shift occurred primarily because 2000V wire enables longer string configurations, which in turn reduces the number of combiners, inverters, and associated wiring required. Therefore, even though 2000V wire may cost slightly more per foot, the overall system savings are significant. In addition, since many utilities and Authorities Having Jurisdiction (AHJ) now specifically require 2000V wire, specifying it from the start avoids costly rework during inspection.

---

Copper vs. Aluminum PV Wire: Which Should You Use?

For most residential and commercial solar installations, copper PV wire is the preferred conductor. This is primarily because copper offers higher conductivity per cross-sectional area, which means smaller, easier-to-handle cables for the same current capacity. Additionally, copper connections are more reliable at termination points, thereby reducing the risk of loose connections over time.

Choosing the Right Conductor for Your Application

In contrast, aluminum wire — such as our 500 MCM Aluminum PV Wire — is typically used for long utility-scale feeder runs where weight and cost savings outweigh the handling advantages of copper. Consequently, if your project involves runs under 500 feet and currents below 200 amps, copper is almost always the better choice. However, for very long feeder runs in utility-scale systems, aluminum becomes increasingly cost-effective. In either case, our technical team is available to help you select the right conductor for your specific application.

---

Recommended Applications

This UL4703 Copper PV Wire is specifically designed for the following solar installations:

- 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

Matching the Right AWG to Your System

Since every solar installation has different current and distance requirements, selecting the correct AWG is critical. As a general guideline, 12 AWG is suitable for short module-to-module runs, while 10 AWG is the most widely used size for residential string connections. For commercial systems with higher currents, 8 AWG and 6 AWG are typically specified. Furthermore, our free Voltage Drop Calculator is available to help you confirm the right gauge for your project before ordering.

---

Shipping & Availability

All sizes are in stock and ready to ship same day from our three fulfillment centers strategically located across the USA:

- LaPorte, Texas
- Miami Lakes, Florida
- Rancho Dominguez, California

In addition, pick-up is available at all three locations. Consequently, most orders arrive within 1–3 business days regardless of your location.

Free shipping on PV Wire orders over $10,000 USD — applied automatically at checkout.

Fast Delivery for Time-Sensitive Projects

Since solar project timelines are often driven by interconnection deadlines and ITC tax credit windows, fast and reliable shipping is essential. For that reason, we maintain ready inventory at all three locations at all times. Moreover, for large projects requiring multiple reels, our team can coordinate consolidated shipments to minimize freight costs. Simply contact us and we will arrange the most efficient delivery option for your project.

Questions about sizing, quantity, or volume pricing?
Phone: +1 305 842-6291 | Email: sales@photovoltaiccable.com

---

Frequently Asked Questions

Q: 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. Since the price difference is minimal, 2000V is generally the recommended choice for all new installations. For a detailed comparison, see our guide: 2000V vs 600V PV Wire.

Q: What AWG size do I need for my solar installation?
The correct AWG depends on your string current, cable length, and acceptable voltage drop. However, 10 AWG is the most commonly specified size for residential systems, while 8 AWG and 6 AWG are used for higher-current commercial applications. Use our Voltage Drop Calculator for a precise recommendation.

Q: 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.

Q: Do you offer custom reel lengths?
Standard reels are available in 500, 1,000, 2,500, and 5,000 feet. For custom lengths or cut-to-order requests, contact our sales team at +1 305 842-6291.

Q: 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.