Solar Panels Wiring & Fuse sizes-- advice please

Discussion in 'The Beginner' started by oldflemo, Apr 17, 2015.

  1. oldflemo

    oldflemo Funster

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    Hi -planning to install two 120 watt solar panels, a 20 A MPPT controller, a 350 W inverter connected to two 110 ah batteries.
    The batteries will be within 1 metre of controller and the inverter.
    Can you please advise the optimum cable sizes from controller to battery and battery to inverter and also the inline fuse/s size required?
    Thank you again
    Ian
     
  2. pappajohn

    pappajohn Funster Life Member

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    I would say battery to controller....min 4mm....the fly leads from the panels are generally 4mm

    battery to inverter.....16mm.
    maybe overkill but saves changing it when you upgrade the inverter.
     
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  3. andy63

    andy63 Funster

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    hi ian, I would say you would be fine with 4 to 6 mmsq from cont to batt and say 10mmsq to inverter but the bigger the better.. fuse say 15 to 20 amp.. but im sure you will get better advice from someone who does a bit of this sort of work.
    ta andy
     
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  4. andy63

    andy63 Funster

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    aLOL there you go ... from the man that does know @pappajohn .. just didn't like seeing no replies :)
    ta andy
     
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  5. oldflemo

    oldflemo Funster

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    Thank you guys for your kind help
    Ian
     
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