A PREFALZ solar panel system requires one supply line and one discharge line for each string. In the following diagram of the cabling, the supply line is shown in blue, the discharge line in red, the equipotential bonding in green, and the solar panel cables in black for easier recognition.
Please note that the supply lines and discharge lines, connecting cables and equipotential bonding cables must be routed in a UV-resistant electrical installation pipe. There must be no unprotected cables directly on the roof surface. The corresponding design must be clarified with the electrician performing the work.
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