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Mercer 7.2kw Inverter (Backup)

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Hi Guys

 

I have a 7.2kw inverter running 16 panels works very very well. Except over the easter hols now when we virtually had 5 days of solid cloud cover. I chose to have a generator back up for this scenario. I have a 6.5kw petrol generator with steady 50hertz and 230v inputs to the inverter. However, the invert only goes to line mode charging batteries and house for a couple of seconds then it goes directly feed the property with no supply going to the batteries.

Will I need 100% to have a pure sine form entering the inverter? I mean do I need a Pure Sine form generator or should it work based on the set up I have given above.

Thanks in advance

Limpopoboy

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