Custom Solar Cable Assemblies and Wire Harnesses

Professional Solar Industry Services

We know that well-functioning solar photovoltaic (PV) power plants are key to the success of such projects. With our years of experience in the solar industry, we can provide accurate and practical solutions to assist you. You will gain from picking Romtronic as your partner. All our products are RoHS compliant, ensuring they meet the requirements for export anywhere in the world. To ensure the quality and reliability of each wire harness, our solar wire harnesses are ETL-certified. We conduct performance testing on various types before they leave the factory.

Minimize The Costs and Maximize Efficiency

Pre-made cable harnesses and virtually automated production lead to a plug-and-play solution at the installation site, which minimises work in the field and saves on expensive person-hours and errors in your PV system. Moreover, our pre-built collector harness solutions reduce installation expenses and preserve time and money through intrinsic troubleshooting needed in operation.

Product Advantages

Our solar wire harness solutions offer the following advantages:

• Quick and Easy Installation
• Replaceable In-Line Fuse Holders
• ETL Standard Certification, Supporting up to 1500V
• Reduced Cable and String Connections
• TPV Material Overmolding for Superior Waterproofing
• Customizable Cable Lengths and Connectors

Technical Guide to Solar Cables

Solar cables are crucial components in solar systems, connecting solar panels to other parts of the photovoltaic (PV) system. Our solar cables are UV-resistant, weatherproof, and capable of withstanding extreme temperatures, ensuring reliability and durability in even the harshest environments.

Types and Applications of Solar Cables

PV systems convert sunlight into electricity through solar panels, but they rely on specialized cables to transmit the power. The main cables used are PV Wire, USE-2 Wire, and THHN Wire, each of which is suitable for different applications due to its unique construction.

PV Wire

PV Wire is commonly used for interconnection wiring in PV systems. Key features include:

• Conductors: Bare or tinned copper
• Insulation: XLPE
• Voltage Ratings: 600V, 1000V, or 2000V
• Temperature Range: +90°C (wet) and +150°C (dry)
• Applications: Suitable for grounded and ungrounded PV arrays, direct burial
• Standard: UL 4703 compliant

USE-2 Wire

USE-2 Wire is explicitly designed for grounded PV arrays with the following characteristics:

• Conductors: Aluminum, bare, or tinned copper
• Insulation: XLPE
• Voltage Rating: 600V
• Temperature Range: +90°C (dry and wet)
• Applications: Crush and impact-resistant, ideal for industrial applications
• Standard: UL 854 compliant

THHN Wire

THHN Wire is a building wire commonly used for power transmission:

• Conductors: Bare copper
• Insulation: PVC
• Voltage Rating: 600V
• Temperature Range: +90°C (dry) and +75°C (wet)
• Applications: Not suitable for applications requiring USE-2 or PV Wire
• Standard: UL 83 compliant

Selecting the correct cable size is essential for the safe and efficient operation of solar systems. We offer a range of cable sizes and specifications to meet the diverse needs of various systems, including connections between power inverters, batteries, charge controllers, and solar panels.

Custom Solar Solutions

Whether for residential or commercial applications, our solar cables and harnesses can be customized to your specific requirements. Our product range includes:

• MC4 Locking Connectors
• SOLARLOK® Solar Connectors
• MC3 Non-locking Connectors
• Battery Connection Cables
• Battery to Inverter Cables
• Tray Cables
• Solar Panel Extension Cables
• Adapter Cables

High-Quality Manufacturing and Rigorous Testing

We are committed to delivering high-quality products. All our manufacturing processes comply with UL and CSA standards and take place in China, adhering to ISO and RoHS standards. Our highly automated and intelligent production process improves production efficiency and product quality. Every product undergoes a 100% inspection and is digitally marked to ensure reliability.

Conclusion

With 28 years of professional experience, Romtronic provides high-quality solar cable assemblies and wire harness solutions to meet the growing demand for renewable energy. Regardless of your solar system application, we offer customized, high-performance cable assemblies to ensure the long-term safety and efficient energy conversion of your system.

Contact us to learn more about our custom solar cable assemblies and wire harness products, and let’s work together to advance the future of renewable energy.