edfowler
New Member
Hello solar dudes,
I ended up with two EG4 6000XPs now and want to add 3 strings to utilize the extra capacity. Sig Solar set me up one year ago with an EG4 6000EX (which I upgraded to the XP and am loving it), 3 EG4 48V 100AH batteries, and 12 Canadian Solar 320 panels which I have set up 6s2p. The panels are producing 3836.16w/199.79V/19.2A on perfect day.
I have kicked around the idea of adding 3 Aptos 370 to each string and making it a mixed bag producing 6220W/324V/19,2A in a 9s2p configuration. Also thought of a 8s2p configuration producing 5425W/282,6V/19.2A. Lastly, a 7s2p would make 4631W/242.2/19.2A.
I think all that cipher'n hurt my brain and I will just leave well enough alone on my first string even though the 6000XP isn't running optimally on the 199V/19.2A input.
I think I want to add 3 strings and set the inverters up in parallel, hopefully quadrupling my solar production.
What do you all recommend? I'm thinking 3 strings of 8 Aptos 370, each in series to the individual MPPTs. 8 Aptos 370 in series would produce 3702W/328.8V(optimal V for the 6000XP/and 11.26A). Either that, or maybe 9 Aptos 370 in series (4195.48W/372.6V/11.26)
The Aptos will, unfortunately, be mounted on a steel roof due to spousal considerations.These 4 strings should produce 14,942.16KwH on a perfect day I hope.
My math may be wrong so no offense will be taken if anyone more smarter than me wishes to correct my thinking. I just want to get it right. I average a little over 2000KwH per month usage now using the array I have. I only started measuring output this week since I just got the one 6000XP up and running and I am averaging about 20KwH/day production. It has been a hot sunny/cloudy week here in central Indiana.
Thanks for your input
I ended up with two EG4 6000XPs now and want to add 3 strings to utilize the extra capacity. Sig Solar set me up one year ago with an EG4 6000EX (which I upgraded to the XP and am loving it), 3 EG4 48V 100AH batteries, and 12 Canadian Solar 320 panels which I have set up 6s2p. The panels are producing 3836.16w/199.79V/19.2A on perfect day.
I have kicked around the idea of adding 3 Aptos 370 to each string and making it a mixed bag producing 6220W/324V/19,2A in a 9s2p configuration. Also thought of a 8s2p configuration producing 5425W/282,6V/19.2A. Lastly, a 7s2p would make 4631W/242.2/19.2A.
I think all that cipher'n hurt my brain and I will just leave well enough alone on my first string even though the 6000XP isn't running optimally on the 199V/19.2A input.
I think I want to add 3 strings and set the inverters up in parallel, hopefully quadrupling my solar production.
What do you all recommend? I'm thinking 3 strings of 8 Aptos 370, each in series to the individual MPPTs. 8 Aptos 370 in series would produce 3702W/328.8V(optimal V for the 6000XP/and 11.26A). Either that, or maybe 9 Aptos 370 in series (4195.48W/372.6V/11.26)
The Aptos will, unfortunately, be mounted on a steel roof due to spousal considerations.These 4 strings should produce 14,942.16KwH on a perfect day I hope.
My math may be wrong so no offense will be taken if anyone more smarter than me wishes to correct my thinking. I just want to get it right. I average a little over 2000KwH per month usage now using the array I have. I only started measuring output this week since I just got the one 6000XP up and running and I am averaging about 20KwH/day production. It has been a hot sunny/cloudy week here in central Indiana.
Thanks for your input