Why the Frankfurter Pfanne Poses Special Requirements
The Braas Frankfurter Pfanne has been one of the most widely used roof tiles in German-speaking countries for decades. Its characteristic profiling with the distinctive central bead presents a challenge for cable routing: PV cables cannot simply be run between two tiles without creating pinch points or friction points.
In practice, many installers resort to temporary solutions — tiles are ground down, cables are laid over the eaves, or threaded through the ventilation slit. These makeshift solutions do not offer lasting protection against mechanical abrasion.
What Installers Should Consider for Cable Routing
A professional PV cable lead-through for the Frankfurter Pfanne must match the grid dimension (coverage width approx. 300 mm, coverage length approx. 330 mm), provide space for PV cables (approx. Ø 7.5 mm) and grounding cables (up to Ø 16 mm) — ideally simultaneously — and allow for installation without extensive modification of the roof tile.
The NEXCAPE® Roof Lead-Through 125 mm for the Frankfurter Pfanne
The NEXCAPE® PV cable roof lead-through in the 125 mm variant is designed to match the geometry of common concrete roof tiles like the Frankfurter Pfanne. It is hooked into the roof tile and allows for clean routing of PV and grounding cables — with MC4 connectors installed, without disassembling the plug connections.
The material — UV-resistant technical plastic — protects the cables at the lead-through point from mechanical abrasion. Installation in three steps: grind out the roof tile if necessary, route the cable, hook in the lead-through. No special tools required.
Practical Tip: Multiple Lead-Through Points for Larger Systems
For PV systems above a certain size, a single cable lead-through is often not sufficient. Multiple strings mean multiple cable pairs. Recommendation: Distribute lead-through points along the eave side — this avoids cable jams, reduces friction risks, and simplifies later maintenance.
Common Mistakes in Cable Routing
Excessive grinding impairs the stability of the tile. Cables without protective sleeves on the concrete roof tile edge are particularly vulnerable — concrete roof tiles act like sandpaper on the cable insulation. MC4 connectors improperly reassembled after disassembly increase contact resistance. The NEXCAPE® lead-through avoids this problem as MC4 connectors can remain installed.
Available Sizes and Order Quantities
Available in three lengths: 105 mm, 125 mm, and 150 mm. For the Frankfurter Pfanne, the 125 mm variant is the most common choice. Packs of 20, 50, 100, 500, or 1,000 units — for businesses of all sizes.
All information and current availability at dachdurchfuehrung24.com | Contact: support@nexcape.de | Tel: 07054 927999
