September 3, 20241 yr Hi. I am new to forum and am in the Garden Route. I have a 8kw Synsynk inverter, Sunsynk 10kw battery and 14x 500w solar panels. I manually heat 2x 150lt geysers with 2kw elements, connected with wifi & the CBi app. I am busy connecting a total of 12000lt of watertanks to run two houses (on one property.) I have purchased a 1.1kw pump, but have received conflicting advice on the pump. Apparently on start up, the amps can double or triple, and can either damage the solar panels or reduce the life of the battery. What options can I look at to protect my solar system from the pump start up, if necessary?
September 4, 20241 yr a 8kw Sunsynk, with 10kw sunsynk batteries, wont even feel that pump starting up. a pump starting up cannot damage your panels. I run a 1.1Kw pump on a 3kw inverter, with 5kwh batteries, and it has never caused any problems or damage.
September 4, 20241 yr 5 hours ago, Grant Nomel said: Hi. I am new to forum and am in the Garden Route. I have a 8kw Synsynk inverter, Sunsynk 10kw battery and 14x 500w solar panels. I manually heat 2x 150lt geysers with 2kw elements, connected with wifi & the CBi app. I am busy connecting a total of 12000lt of watertanks to run two houses (on one property.) I have purchased a 1.1kw pump, but have received conflicting advice on the pump. Apparently on start up, the amps can double or triple, and can either damage the solar panels or reduce the life of the battery. What options can I look at to protect my solar system from the pump start up, if necessary? Will the inverter be connected with a grid input? If so, it can pass through grid power if the inverter happens to be fully loaded and the surge comes on top. The inverter and batteries in any case have a surge rating to handle this type of spike if you're running off-grid. You could maybe consider a pressure tank if the pump is serving two households. That would rather be for the benefit of saving the pump from continuous start-ups.
September 4, 20241 yr 7 hours ago, Grant Nomel said: have purchased a 1.1kw pump, but have received conflicting advice on the pump. Apparently on start up, the amps can double or triple, and can either damage the solar panels or reduce the life of the battery. Welcome to the forum. I concur with @stefan44and @GreenFields the 8kw inverter and battery capacity is more than capable of starting and running the pump. It is always a good idea to do load staggering( don't run geysers pump and..... at the same time). I tested a 8kw Sunsynk with a 2.2kw(3hp) Ingersol Rand compressor starting it up with a 3kw geyser running at one of my clients workshops and didn't skip a beat.
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