Phocos CML-V2 Guide De L'utilisateur page 26

4
Grounding the Solar System
Be aware that the positive terminals of the CML controller are
connected internally and therefore have the same electrical
potential. If any grounding is required, always do this on the
positive wires.
Connect the wires leading to the loads
with correct polarity. To avoid any
voltage on the wires, first connect the
wire to the load, then to the controller.
Mind the recommended wire size:
CML05: min 2.5 mm
CML08: min 4 mm
CML10: min 6 mm
CML15, CML20: min 10 mm
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