View the thread, titled "SB 3000tl" which is posted in Solar PV Forum | Solar Panels Forum on Electricians Forums.

D

dek69

Hi i have been advised to use an SB 3000 tl inverter with 12 x 300watt panels. I know efficiency and losses etc bring the power down but it seemed a bit small . Any observations please.
 
12x 300 = 3600W, this is KWP (Kilowatt peak), which is the maximum a system could produce "peak", however due to orientation of the roof, cable and Inverter loses etc, no system can ever "peak" at that maximum, so the calculation is normally 80-85% of KWP.
In my opinion that Inverter would be a perfect match for that size of system, and being a TL Inverter it has good efficiency as-well.
I hope this helps.
 
12x 300 = 3600W, this is KWP (Kilowatt peak), which is the maximum a system could produce "peak", however due to orientation of the roof, cable and Inverter loses etc, no system can ever "peak" at that maximum, so the calculation is normally 80-85% of KWP.

Systems can always reach their maximum and even go beyond. The reason we generally undersize inverters is due to efficiency sweet spots in the inverters themselves.
 

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