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Mr Solar Newbie(Gary)


Gary M
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Inverter Growatt SPF5000ES keeps tripping earth leakage cannot run it with mains on, but will run and power loads when mains is off, do I need to have a separate neutral bar for my essential circuits 

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Your inverter is supposed to be fed before the earth leakage and you should have an earth leakage after your inverter for the essential items. This would require a separate neutral bar for the second earth leakage.

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Thanks I will give this a go in the morning, I have it wired up as indicated just did not seperated essential load neutrals  from mains neutral need to go get a neutral bar first

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Hi De0n19

I have just done a drawing of my DB layout and yes I have now installed a second Neutral bar off the inverter neutral out and its all working fine now

DB layout.png

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I see that you have a 50A breaker to send power to the inverter, this would required at min a 10mm cable to the inverter, the inverter neutral shows it is fed from the neutral bar, i assume this just to be an error with the diagram. The earth leakage you have after the inverter should probably have a tripping current of 63A, some off these are only earth leakage and not over current devices , as this is way too high for the inverter i would rather have a 30A breaker feeding the earth leakage, assuming you are using at min a 4mm cable from the inverter.

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