Solar Panel Wiring Diagrams - Optex EcoOnline User Manual

5 Solar Panel Wiring Diagrams

Here you will find the in parallel and in series connection diagrams for wiring two (36 cell) solar panels together if
required.
NEVER screw clamp solder tinned wires to the junction box terminals. Positive and
negative wires must be soldered onto the solar panels terminals in the junction box.
Always check that the solar modules are wired for the same voltage as the battery by using a
multimeter. Open circuit voltage of a "12V nominal" or 36 cell solar panel or in parallel
connected solar panels should be around 21V. This should be doubled for a 24V system.
5.1 In Parallel Connection Using Twin Cord Wire – for 12V system
5.2 In Parallel Connection Using Single Cord Wire – for 12V system
Eco Online™ Solar Panel -- Installation and User Manual
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