Why MC4 Connectors Become a Problem with Roof Penetrations
MC4 connectors are the standard in photovoltaic systems for wiring between modules and inverters. The connectors are designed to establish a reliable electrical connection and not to loosen unintentionally.
However, it is precisely this characteristic that becomes an obstacle when routing cables through the roof: conventional roof penetrations often have openings that are too small to allow the MC4 connector to pass through. The MC4 connectors have to be dismantled before routing and reassembled afterwards — this takes time and entails warranty risks.
The Solution: NEXCAPE® Roof Penetration with MC4 Pass-Through
The NEXCAPE® PV Cable Roof Penetration was specifically developed for this problem. The design allows PV cables with assembled MC4 connectors to be routed through the roof level — without dismantling the connectors.
The principle is simple: the penetration is hung directly into the roof tile and offers sufficient space for PV cables (approx. Ø 7.5 mm) and grounding cables (up to Ø 16 mm) including the MC4 connectors.
Technical Data at a Glance
The NEXCAPE® roof penetration consists of UV-resistant technical plastic and is available in three lengths: 105 mm, 125 mm, and 150 mm. Installation in three steps: grind out roof tile if necessary, route cables, hang in penetration. No special tools required.
Time Savings in Practice
For electrical companies and solar installers, the time required for MC4 disassembly adds up considerably. The NEXCAPE® roof penetration completely eliminates this work step — shorter installation times, less risk due to incorrect connector assembly, module warranty remains intact.
Packages for Professional Use
The NEXCAPE® PV Cable Roof Penetration is available in practical packages: 20, 50, 100, 500, and 1,000 units. All products are manufactured in Germany.
Order now: Visit our B2B Shop or contact us at support@nexcape.de or +49 7054 927999.
