Let's just call the configuration in your picture a 2S3P (two series, three parallel) instead of a 2S2P. That should help.
My Small Solar Project in Progress
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[QUOTE=john95;n357470]
This is how I have the 4x 320 watt solar panels wired:
Each panel produces at least 6 Amps
2 are wired in series and 2 in parallel to get 72 Volts all combined. From all 4 I get a positive and a negative that are attached to the charger.
The readings on the charger @ 12:00pm are:
IN:
68.6 V
4.9 Amps
According to these previous readings the panels should be producing 336.14 watts?
Even at 9 Amps max which the panels are rated will not produce even 80% of their capacity.
OUT:
25.5 V
12 AmpsComment
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[QUOTE=max2k;n357476]Yes, the attached picture is for 6 panels wired in serial/parallel. This is for references purpose only. I have 4 panels connected in the same way as the pictured attached. I should have edited the picture to show exactly how I have my 4 panels wired.Comment
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This picture shows better the wiring of my 4x 320 watt panels wired in 2S2P.
Notice how the amps double from 4 Amp to 8 Amp and the 12 V double to 24 volts in this example.Attached FilesLast edited by john95; 08-05-2017, 05:38 PM.Comment
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My small off grid solar system upgraded from 4 batteries to 8 batteries:
4x Mission Monocrystalline 320 Watt 24 volt Solar Panels
Outback FlexMax 80 Charge Controller
Go Power 1500 Watt 24 Volt Inverter
8x 6 Volt Interstate deep cycle Extreme 24 Volt battery bank, 450 Amps, 10.8 kW storage
My loads are less than 400 watts per hour, 7 hours daily (about 2.8kW)
3x 9 watt lights bulbs, 8" fan, 65" TV, Computer, Cable Modem, router & Switch.
Do you guys like my system so far?Comment
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My small off grid solar system upgraded from 4 batteries to 8 batteries:
4x Mission Monocrystalline 320 Watt 24 volt Solar Panels
Outback FlexMax 80 Charge Controller
Go Power 1500 Watt 24 Volt Inverter
8x 6 Volt Interstate deep cycle Extreme 24 Volt battery bank, 450 Amps, 10.8 kW storage
My loads are less than 400 watts per hour, 7 hours daily (about 2.8kW)
3x 9 watt lights bulbs, 8" fan, 65" TV, Computer, Cable Modem, router & Switch.
Do you guys like my system so far?
My only question is approximately how much did everything (including wires, connectors, overcurrent devices and racking) cost to build it?Comment
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About $2,800 ~ $3,000 plus my labor, which is the most expensive part. A certified technician would probably charge me $5K ~ $7KComment
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I spent about $2500 on my small system but can only generate about 700watt hours a day. Biggest issue was the high cost of using battery panels, a low end PWM CC and AGM batteries.Comment
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I have electricity all the time without any interruption. This is very important to me because I have a home surveillance camera system that if the electricity goes down then it locks viewing from the internet and I can't control the system from my work. The system has to be rebooted locally for the cameras to be seen from the internet. Also my router and switches go crazy and internet goes down in my house if electricity goes down.
Eventually, I want to get a Tesla Powerwall battery, it is very expensive for now. About $6K for 14kWh of storage. I have 10.8 kWh on flooded batteries for a fraction of the cost of a PowerWall battery.
The guy who sold me the batteries told me that these batteries last working in golf cars from 5 ~ 7 years, with my use they could last even more. But let's assume that they last me 3 years only, that's $2.74 a day for the whole solar system. Definitely I'll pay even more a day for reliability and for having my own power. Right now by 11:00am my batteries are fully charged. Isn't it great?Comment
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I have electricity all the time without any interruption. This is very important to me because I have a home surveillance camera system that if the electricity goes down then it locks viewing from the internet and I can't control the system from my work. The system has to be rebooted locally for the cameras to be seen from the internet. Also my router and switches go crazy and internet goes down in my house if electricity goes down.
The guy who sold me the batteries told me that these batteries last working in golf cars from 5 ~ 7 years, with my use they could last even more. But let's assume that they last me 3 years only, that's $2.74 a day for the whole solar system. Definitely I'll pay even more a day for reliability and for having my own power. Right now by 11:00am my batteries are fully charged. Isn't it great?
what it would take here so that the TV distribution, cameras, alarm, bat maintainers, and computer could all
ride through a short or long AC dropout. Not much power, but spread around and at different voltages. Some
solar could guarantee no time limit. A really elegant version would use the vehicle batteries it normally
maintains, as the battery plant. Bruce RoeComment
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