MrM1
I'm Here, But I'm Not All There
We have kicked around over paneling the Growatt 12kw 250vdc and it seems from many discussions, that it is not advisable. Might could get away with maybe 20% over, but in the end we decided it is not worth it, so we decided to just add a second 250v SCC.
I had found an 8 string input, 2 output combiner from Watts247 that is rated for in excess of 250v, but now we need the 4 - 2 combiner to go with our 8 - 2 so that we can add the second SCC. The inverter AIO and the new external SCC will both have 2 PV inputs each: PV1 and PV2. So we will build out 4 seperated 4s2p arrays using 370w panels with a VOC of 47.46v per panel.
Problem is I am having a hard time locating another combiner that is rated for 250vdc. Watts247's 4 - 2 is out of stock. I could use a pair of Midnite solar 3 breaker boxes but from what I can see the breakers are only good for 150vdc. I think I understand that you can parallel them, but really do not want to do that.
What are my options for a 250vdc combiner box? Will I have to use fuses instead of breakers?
I had found an 8 string input, 2 output combiner from Watts247 that is rated for in excess of 250v, but now we need the 4 - 2 combiner to go with our 8 - 2 so that we can add the second SCC. The inverter AIO and the new external SCC will both have 2 PV inputs each: PV1 and PV2. So we will build out 4 seperated 4s2p arrays using 370w panels with a VOC of 47.46v per panel.
Problem is I am having a hard time locating another combiner that is rated for 250vdc. Watts247's 4 - 2 is out of stock. I could use a pair of Midnite solar 3 breaker boxes but from what I can see the breakers are only good for 150vdc. I think I understand that you can parallel them, but really do not want to do that.
What are my options for a 250vdc combiner box? Will I have to use fuses instead of breakers?