Grounding - opti-solar SC-Max series User Manual

1st step: Connect the battery
Connect the battery connection cable with the correct polarity to the middle pair of terminals on the solar charge
controller (with the battery symbol). If the system is 12V, please make sure that the battery voltage is within
10V~16V, else if the system is 24V, the battery voltage should between 20V~30V. If the polarity is correct, the
LCD screen on the controller will begin to show.
2nd step: Connect the solar module
Ensure that the solar module is protected from incident light. Ensure that the solar module does not exceed the
maximum permissible input current. Connect the solar module connection cable to the correct pole of the left pair
of terminals on the solar charge controller (with the solar module symbol).
3rd step: Connect loads
Connect the load cable to the correct pole of the right pair of terminals on the solar charge controller (with the
lamp symbol). To avoid any voltage on the wires, first connect the wire to the load, then to the controller.
4th step: Final work
Fasten all cables with strain relief in the direct vicinity of the solar charge controller (clearance of approx.10cm).

5.5 Grounding

Be aware that the positive terminals of the controller are connected internally and therefore have the same
electrical potential. If any grounding is required always do this on the positive wires.
!
Remark: If the device is used in a vehicle which has the battery negative on the chassis, loads
connected to the controller must not have an electric connection to the car body, otherwise the low voltage
disconnect and electronic fuse functions of the controller are short circuited.
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Figure 3: System wiring
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