Installation and Operating Guide
AUS240729 12
6 Electrical installation
The electrical connection of the individual solar modules to each other and the connection to the
inverter must be made using the connectors of the same type pre-mounted on the solar modules.
The cables must not be used as carrying aids or bent and must not be installed under tensile stress.
Only use special solar cables and suitable connectors that comply with the local specifications at the
installation site.
Only certified solar cables may be used for earthing and connecting the modules (e.g. IEC 62930
approved). The recommended minimum cross-section of the cable is 4 mm² (#12 AWG). Only
certified solar cables may be used for grounding and connecting the modules. The minimum bending
radius is 5x the cable diameter.
Keep the connectors dry and clean during installation. Note that pollution from sand, dust and water
will result in arca and electrical shock of connector.
Secure the cable to the mounting system with UV-resistant cable ties and avoid direct sunlight on
the cables.
Cables and connectors must not rest on the roof cladding and must not lie in the water-bearing plane.
The electrical installation and commissioning must only be carried out by a qualified electrician who
knows the relevant standards and regulations for the use and assembly of solar modules. Our
operating instructions do not enable persons lacking the mentioned knowledge to assemble the solar
module.
Modules must not be operated under short-circuit conditions.
Disconnecting the module connections during operation can result in light arcs (break
sparks) and therefore in a hazard for people and equipment. Do not insert any objects into
the plugs and sockets!
6.1 Electrical design
Connect the max. number of modules that corresponds to the voltage specifications of the devices
used in the system. The modules (in accordance with protection class II) must not be operated with
a higher voltage than the permitted system voltage. The specifications can be found in the datasheet
of the modules or in the datasheet of the relevant inverters. Please ensure that the cables are
installed and fixed in such a way that, in particular, the plug-in connections do not lie in a water-
carrying plane.
All connected electrical components must be designed for the maximum operating voltage of the
system.
Due to special environmental conditions, a module may supply a higher current and/or voltage than
specified under the standardized test conditions. When designing PV systems, the values for Isc and
Uoc should be multiplied by a factor of 1.25 to determine the nominal values for components such
as, e.g., cabling, fuses and inverters which will be connected to the output of the modules.
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