Zapper77
Renaissance Man
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I've played around with the 18Kpv using the 6000xp’s as the grid with on grid enabled. The 6000xps handle the surge loads on and off.
EG4 6000XP Released, ordered. Let's Go!
- Thread starter solarenvy
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Zapper77
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zanydroid
Solar Wizard
What do you mean by on and off?
JBoffgrid2022
New Member
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I am sorry about the confusions again! I was referring to "each" as a 4 panel group. I will try and again to clarify my logic. I will also post the panels below so you can see the specs.
I am installing a total of 16 panels. Each panel is giving me roughly 44 volts @ 10.2 amps totaling 450 watts. I am going to them all in groups of 4 (4 x 44v = 176 volts). This will give me 4 groups of 4 panels each totaling 16 panels.
Specs on the panels:
I am installing a total of 16 panels. Each panel is giving me roughly 44 volts @ 10.2 amps totaling 450 watts. I am going to them all in groups of 4 (4 x 44v = 176 volts). This will give me 4 groups of 4 panels each totaling 16 panels.
Specs on the panels:
zanydroid
Solar Wizard
You need to use Voc not Vmpp for the safety limit (and maybe also start calculations)
Zapper77
Renaissance Man
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I'd do two strings of 7 or 3 strings 6,6,4. What happened to the two panels? You said, "you had 18 panels".
What happened to @solarenvy ?
Quattrohead
Solar Wizard
Two groups of eight is easier on the wiring and the inverters will easily handle the voltage.
JBoffgrid2022
New Member
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I have 18 panels but I was under the impression 9 panels per inverter would be too much voltage.
Quattrohead
Solar Wizard
Nope your good ?
If you have 2 mppt inputs per inverter then you can split up the 9 panels between the 2 inputs and you won't go over voltage.
You would go over voltage if you ran all 9 panels in series to 1 input.
JBoffgrid2022
New Member
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Because 9 isn't divisible by 2 evenly, I would do one series of 4 panels and one series of 5 panels into each inverter?
Sorry, I just have so many more questions than answers lol
Last edited:
Zapper77
Renaissance Man
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The 6000xp inverter doesn't have that feature. It's considered offgrid.
Grid connection is used for backup, AC charging.
I believe you can do it that way with this inverter.
If you want to play it safe, you can run 4 into input 1, and 4 into input 2 for inverter1. Then on the 2nd inverter you can run 5 into input 1 and 5 into input 2.
Thanks, pvgirl!
AZ Solar Junkie
Maricopa, AZ
The only safe way to allow it to put power back to your main panel would be to backfeed power through a breaker in your main panel but you MUST use a generator interlock kit that would ensure the main/grid breaker and the breaker you are backfeeding with can NEVER be on at the same time. But yeah you could do that.
Just remember to allow for the coldest day of the year ever recorded in your area. Your voltage goes up the colder it gets.
ksmithaz1
Solar / EV Junkie
No, You would create a wiring nightmare if you try and get creative, it's a really bad idea to try and do an interlock if you are already tied, blah, blah.
AZ Solar Junkie
Maricopa, AZ
An interlock kit is fine enough as long as the inverter is providing enough power for all the loads. Otherwise you would have to power off some of your circuits to get the load down. I agree - a better idea is to use a transfer switch to be able to switch specific circuits between grid power and inverter power at will.
I would like to do a transfer switch but haven't gotten that far yet. In the meantime I'm using an off-grid (mostly) panel to power specific things, but with an interlock kit to be able to switch all the loads in the panel from the inverter to grid power for those times I need to take down my off-grid system for changes, maintenance, etc.
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