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Cable size from inverter

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  • 13-10-2019 9:34pm
    #1
    spose
    Registered Users Posts: 297 ✭✭


    Just checking what size cable you would recommend going from the inverter to the board for a 4.7kw solar setup covering a distance of about 30m


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    #2
    air
    Registered Users Posts: 2,822 ✭✭✭air


    spose wrote: »
    Just checking what size cable you would recommend going from the inverter to the board for a 4.7kw solar setup covering a distance of about 30m

    Go 10sq minimum to limit the voltage rise, worth it for the small increase in marginal cost.
    Your electrician will have the final say anyway.


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    #3
    [Deleted User]
    Posts: 5,238 ✭✭✭ [Deleted User]


    Link

    Max operational current +20% overhead.
    Panels to inverter < 3% voltage drop.
    Inverter to CU < 3% voltage drop.
    Charger to battery ~1% voltage drop depending on nominal battery voltage.


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