Hoymiles HMS AC Trunk End Cap: Essential IP68 Weatherproof Termination

The Hoymiles HMS AC Trunk End Cap is a critical safety component required for every Hoymiles HMS series installation. Designed to terminate the end of an AC Trunk Cable branch, this cap ensures the entire electrical system remains IP68-rated waterproof and dust-tight. By sealing off the exposed wire ends at the end of a run, it prevents moisture ingress, short circuits, and corrosion, protecting your investment for decades.

Constructed from high-grade, UV-stabilized engineering plastics, this end cap is built to withstand the extreme thermal cycling found on rooftops—from sub-zero Canadian winters to intense summer heat. It is specifically designed for the HMS series trunk cables and provides a secure, tool-tightened seal that meets all modern electrical code requirements for exposed outdoor wiring.

Key Features & Benefits:

• Maximum System Safety: Provides a robust electrical insulation barrier at the end of the AC branch, preventing accidental contact and electrical faults.
• Environmental Protection: Maintains the IP68 integrity of the Hoymiles cabling system, ensuring no water can enter the trunk cable internal conductors.
• HMS Series Compatibility: Precision-molded to fit the Hoymiles HMS AC Trunk Cable (10 AWG and 12 AWG variants).
• UV Stabilized Materials: Engineered for 25+ years of outdoor exposure without becoming brittle or cracking.
• Simplified Installation: Easy to install at the final microinverter position in a string to complete the circuit professionally.

Technical Specifications:

Installer Note: Never leave the end of an AC Trunk cable open to the elements. Use of the genuine Hoymiles End Cap is required to maintain the manufacturer's warranty on the cabling and microinverters.