EC-350 End Cap Assembly

EC-350 End Cap Assembly

The EC-350 End Cap Assembly is designed to terminate and seal open-ended cable in photovoltaic electrical systems. Built for use with 350 kcmil to 500 kcmil cable sizes, this end cap provides a practical solution for insulating and protecting cable ends in 1500V DC solar applications. In PV installations where cable runs must be properly sealed at the end of a circuit section, an end cap assembly like the EC-350 helps create a clean, protected termination point while supporting organized and code-conscious installation practices.

This EC-350 End Cap Assembly is certified to UL 9703:2018 and carries certification number TU 722290012 01. It is also rated IP68 for dust and water protection per IEC 60529, making it well suited for solar and outdoor electrical environments where dependable environmental sealing matters. In systems exposed to weather, dirt, and demanding site conditions, a properly selected end cap helps protect open cable ends while supporting long-term performance and installation reliability.

Designed to Seal and Terminate Open Cable Ends

The primary purpose of the EC-350 End Cap Assembly is to cap off the end of an open cable run. In photovoltaic systems, unused or terminated cable ends need proper insulation and sealing to help protect the electrical system and maintain a clean installation. An end cap helps prevent exposure at the cable end while providing a more finished and protected termination point within the wiring layout.

In large-format and utility-scale PV systems, cable management and environmental protection are both important parts of system design. The EC-350 end cap supports these goals by giving installers a dedicated component for terminating compatible cable sizes in a controlled and repeatable way. This can help improve jobsite consistency and support a more uniform installation standard across the project.

Built for 350 kcmil to 500 kcmil Cable Sizes

The EC-350 End Cap Assembly is intended for 350 kcmil to 500 kcmil cable sizes and supports cable outer diameters from 18 mm to 25.5 mm. This makes it a practical choice for solar electrical applications where that conductor range is part of the system design. Matching the correct end cap to the intended cable size is important for achieving proper fit, reliable sealing, and dependable insulation in the completed installation.

Because PV installations often include repeated cable terminations across long runs and multiple system sections, using the right end cap for the cable diameter helps support consistency in the field. The EC-350 gives installers a product that is purpose-built for this cable range while fitting into a broader 1500V DC photovoltaic system design.

1500V DC Performance with UL 9703 and IP68 Protection

The EC-350 is rated for 1500V DC, making it suitable for modern photovoltaic system architectures that require high-voltage DC components and accessories. It is also UL 9703 certified, which is important for projects where listed products support permitting, inspection, and compliance requirements. In addition to its certification, the EC-350 is IP68 rated, helping provide strong protection against dust and water ingress in demanding electrical environments.

This combination of voltage rating, certification, and ingress protection makes the EC-350 a strong fit for solar applications where open cable ends must be properly terminated and sealed. In outdoor PV environments, environmental protection is a major part of product selection, and an end cap with a recognized protection rating helps support dependable performance in the field.

Reliable Installation for Solar Electrical Systems

The EC-350 End Cap Assembly has an installation torque requirement of 65 to 70 inch-lbs. Following the correct installation guidelines and torque values helps support a secure fit and proper sealing performance in the completed assembly. On larger solar projects, clearly defined installation values can help crews maintain consistency and quality from one cable termination point to the next.

In standardized PV installation workflows, components that are built for repeatable use can help reduce variation across the site. The EC-350 is well suited for solar projects that need a dependable end cap for terminating compatible cable sizes while maintaining organized wire management and consistent installation practices.

Practical for Utility-Scale and Commercial PV Applications

The EC-350 End Cap Assembly is a practical solution for photovoltaic systems that require reliable termination of larger cable sizes within the product family. Its compact form and cable compatibility make it well suited for solar electrical layouts where proper sealing of open cable ends is necessary for system protection and installation quality. This makes it useful in utility-scale, commercial, and other large-format PV applications where standardized components help streamline field work.

Because it belongs to a broader family of end caps and splice-related accessories, the EC-350 can be used as part of a more consistent product strategy across multiple conductor sizes. That is especially useful for projects that want similar certification standards, protection ratings, and installation approaches throughout the DC wiring system.

Common Uses for the EC-350 End Cap Assembly

• Terminating open-ended PV cable runs
• Sealing cable ends in 1500V DC solar systems
• Providing environmental protection for exposed cable ends
• Supporting organized cable management in photovoltaic installations
• Applications requiring a UL 9703 certified and IP68 rated end cap

The EC-350 End Cap Assembly is a strong choice for photovoltaic systems that need a certified and field-ready solution for sealing and terminating 350 kcmil to 500 kcmil cable. With 1500V DC performance, UL 9703 certification, and IP68 environmental protection, it fits well into solar projects that prioritize dependable insulation, organized wiring, and repeatable installation quality.