The grounding lug establishes electrical grounding in solar photovoltaic (PV) systems by connecting anodized aluminum or other metal parts to a continuous ground path. It maintains grounding system integrity across roof and ground-mounted arrays while ensuring compliance with electrical codes. The tin-plated copper body minimizes contact resistance and protects against environmental degradation, while stainless steel mounting hardware enhances durability and moisture resistance.
The lug creates a gas-tight electrical connection when installed, preventing oxidation and maintaining low contact resistance over time. Its lay-in feature allows for easy conductor placement, and the low-profile design enables installation in multiple positions without obstructing access. The unit accommodates one solid or stranded copper wire ranging from 14 American Wire Gauge (AWG) to 6 AWG, or two wires from 12 AWG to 10 AWG, with horizontal screw orientation for confined spaces.
Installation uses provided stainless steel screws and washers, tightened to embed specialized teeth into conductive surfaces like anodized aluminum, creating a secure bond without breaking the grounding conductor. The lug attaches to solar panel frames up to 1/4 inch thick using 1/4-28 or 10-32 stainless steel screws, operates effectively in temperatures up to 90°C, and is tested for salt spray environments.
Certifications include Underwriters Laboratories (UL) 2703 Listing, recognition under American National Standards Institute (ANSI)/UL 467, and Canadian Standards Association (CSA) C22.2 No. 41, confirming adherence to National Electrical Code (NEC) requirements for residential and commercial installations.
Grounding Lug Wholesaler with 21 Years of Expertise
RaxPower has 21 years of experience as China’s leading manufacturer of pole line hardware, specializing in R&D, production, and sales. Our Grounding Lug is a critical grounding component designed for easy termination to the ground wire in applications such as solar mounting systems, ensuring reliable electrical connections.
With our one-stop shopping approach, we provide a complete range of bracket accessories, and each Grounding Lug benefits from our extensive manufacturing expertise, including advanced processes like hot forging for superior strength and precision.
Made from corrosion-resistant materials like aluminum and stainless steel, it features a low-profile design for versatile installation, supported by strict quality control and certifications such as SGS.
Ideal for solar ground mounting systems and other electrical needs, our product guarantees durability and performance. Inquiry now.
| Parameter | Value |
|---|---|
| Material | Tin-plated copper |
| Plating | Electro-tin plated |
| Certifications | UL 2703 Listed, ANSI/UL 467 Recognized, CSA Certified to C22.2 No. 41 |
| Color | Green |
| Mounting Hardware | Stainless steel |
| Features | Lay-in design, gas-tight electrical connection, low profile, direct burial rated, horizontal screw orientation |
| Wire Compatibility | One wire: 14 AWG to 6 AWG solid or stranded copper; Two wires: 12 AWG to 10 AWG |
| Screw Size | 1/4-28 or 10-32 stainless steel |
| Maximum Frame Thickness | 1/4 inch |
| Temperature Rating | 90°C |
| Testing | Tested for salt spray environments |
| Included Components | Tin-plated copper lug, stainless steel WEEB washer, nut, bolt, flat washer, lock washer |
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Frequently Asked Questions (FAQS)
What is a grounding lug and what is its primary function?
A grounding lug establishes a continuous ground for anodized aluminum or other metal components in solar arrays and all solar applications. It creates a gas-tight electrical connection when installed with stainless steel mounting hardware, and is also ideal for swimming pool grounding applications.
What materials are grounding lugs constructed from and what certifications do they meet?
RaxPower grounding lugs are constructed from corrosion-resistant tin-plated copper, high-strength 6061-T6 aluminum alloy, and stainless steel to ensure minimum contact resistance and durability. They meet UL 2703 Listed, UL 467 by Intertek ETL, CSA Certified standards, comply with NEC requirements, and are tested to ASTM B117-09 for salt spray resistance, making them suitable for direct burial and corrosive environments.
What wire sizes are compatible with the grounding lug?
The grounding lug accommodates one solid or stranded copper wire ranging from 14 AWG to 6 AWG, or two copper wires from 12 AWG to 10 AWG, allowing flexible installation options in solar PV systems.
How is the grounding lug installed?
Installation uses stainless steel mounting hardware. When tightened, specialized teeth on washers embed into anodized aluminum or any conductive metal to create a gas-tight electrical connection. The lay-in feature allows easy conductor placement, and the low profile enables installation in various positions.
What components are included with the grounding lug?
RaxPower grounding lugs typically include a tin-plated copper lug, stainless steel washer, nut, bolt, flat washer, and lock washer. Some versions may come with a serrated washer or tech screw for rail grounding purposes.
What is your process for ensuring on-time delivery, especially for large orders?
We maintain high inventory levels and typically ship orders within 2 business days after confirmation. For large projects, we coordinate closely to provide shipping updates and ensure timely delivery to meet your schedule.
Can you accommodate custom specifications for grounding lugs based on project requirements?
Yes, we offer custom grounding lug designs to meet specific application needs, including variations in size, material, and features, upon request.
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