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I have a smart Solar MPPT 100/50 solar charger. When I installed my panels, I used 10 AWG wire to run to the solar controller. it's not receiving any voltage from the panels. Now when I reviewed the directions it's saying I need to have 26AWG wire to connect to the charge controller. Will that cause a heating problem having too much voltage passing through it?
Voltage doesn't cause cables to heat up, current does. According to Google 10AWG is much thicker than 26AWG (I'm not American so use mm sq). Using thicker cable than specified is not a problem. Using thinner than specified is. If you are not getting any voltage from the panels you must have a bad connection somewhere.
26AWG is very, very thin. Are you sure that is what is specified?
In addition to what the others said, you may have reversed positive and negatives when making your cables.
