DMEGC Photovoltaic Modules Installation Manual
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5. Electrical Installation
Any hardware used must be compatible with any other used material to avoid galvanic corrosion.
Defects caused by corrosions void the warranty.
It is not recommended to use modules with different configurations (grounding, wiring) in the same
system.
Excessive cables must be organized or fixed in an adequate way, e.g. attached to the mounting
structure by using non-metallic cable ties. Solar cables, connectors and junction boxes should not be
exposed to water exposure, and snow, and rain or water submersion for a long period of
time(IP65/67/68).
For applications requiring high operating voltage several modules can be connected in series to form a
string of modules; the system voltage is then equal to the sum of the voltage of each module.
For applications requiring high operating currents several strings of modules can be connected in
parallel; the system current is then equal to the sum of the current of each string of modules.
The maximum system voltage is 600 volts ,1000 volts or 1500 volts depending on the product family
DC according to standards.
The maximum number of series connected modules depends on system design, the type of inverter
used and environmental conditions.
Based on the maximum series fuse rating of module and local electrical installation code, always make
sure DMEGC PV modules are assembled with the appropriate string fuse for circuit protection.
There is no specific limitation on the number of modules that can be connected in parallel, the number
