diy solar

diy solar

Name your price for drawing up a simple diagram. I will pay it!!! Please! Desperate.

smoothJoey said:
Is he tecnically minded?
Does he have fabrication skills?

I can't see your drawing.
My vision is poor.
Click to expand...
What would I need to fabricate? if you click on the image it should open up and be large enough to see clearly. That's the best way I know how to display what I need. I am somewhat technically minded.
 
Is it that hard to know what amperage busbars and fuses I need based on the two models? If I could just get that information, I could almost do the rest
 
Visionguild said:
What would I need to fabricate?
Click to expand...
You will have to crimp wires.
You will need to mount the all_in_ones to a big of backing board.
You will need to mount backing board.
You will likely need to mount the panels to something.
You may have to fabricate that something.

Visionguild said:
if you click on the image it should open up and be large enough to see clearly. That's the best way I know how to display what I need. I am somewhat technically minded.
Click to expand...
My vision is quite bad.
 
Visionguild said:
Is it that hard to know what amperage busbars and fuses I need based on the two models? If I could just get that information, I could almost do the rest
Click to expand...
Use 4 awg wires, keep the dc domains separate and you don't need any busbars.
You also don't need fuses on the system side because the batteries have built in breakers and we are keeping the functional units separate.
 
So based on your reply on the bus bar thread,
5000 ac watts / .85 conversion factor / 48 volts low cutoff = 122.549019608 service amps
122.549019608 service amps / .8 fuse headroom = 153.18627451 fault amps.
153.18627451 fault amps * 2 inverters = 306.37254902 busbar amps.

At
smoothJoey said:
You will have to crimp wires.
You will need to mount the all_in_ones to a big of backing board.
You will need to mount backing board.
You will likely need to mount the panels to something.
You may have to fabricate that something.


My vision is quite bad.
Click to expand...
I have all that done already.
 
smoothJoey said:
You will have to crimp wires.
You will need to mount the all_in_ones to a big of backing board.
You will need to mount backing board.
You will likely need to mount the panels to something.
You may have to fabricate that something.


My vision is quite bad.
Click to expand...
Sorry, my post got out before I finished it. what I was saying was based on your earlier reply to the busbar thread,
5000 ac watts / .85 conversion factor / 48 volts low cutoff = 122.549019608 service amps
122.549019608 service amps / .8 fuse headroom = 153.18627451 fault amps.
153.18627451 fault amps * 2 inverters = 306.37254902 busbar amps.

at 3000w I get 91.911 fault amps per inverter.
 
Visionguild said:
Sorry, my post got out before I finished it. what I was saying was based on your earlier reply to the busbar thread,
5000 ac watts / .85 conversion factor / 48 volts low cutoff = 122.549019608 service amps
122.549019608 service amps / .8 fuse headroom = 153.18627451 fault amps.
153.18627451 fault amps * 2 inverters = 306.37254902 busbar amps.

at 3000w I get 91.911 fault amps per inverter.
Click to expand...
I deleted that post because I came up with a simpler topology which only requires you to crimp 2 wires per functional unit.
You don't need busbars or supplemental fusing for the new simplified topo.
At least on the dc side.
 
smoothJoey said:
Use 4 awg wires, keep the dc domains separate and you don't need any busbars.
You also don't need fuses on the system side because the batteries have built in breakers and we are keeping the functional units separate.
Click to expand...
So the growatt folks said to combine the two positives and the two negatives via busbars to connect to the two parallel batteries. How do I not use busbars? I don't understand what it means to keep the dc domains separate.
 
smoothJoey said:
I deleted that post because I came up with a simpler topology which only requires you to crimp 2 wires per functional unit.
You don't need busbars or supplemental fusing for the new simplified topo.
At least on the dc side.
Click to expand...
ok, I actually did already buy the 4 gauge cables with ends crimped. Will was pretty adamant in his video on these units that if using two or more in parallel there should be fuses. I didn't think I'd need breakers. I'm listening though. If you have a better solution. Thanks.
 
Visionguild said:
So the growatt folks said to combine the two positives and the two negatives via busbars to connect to the two parallel batteries. How do I not use busbars? I don't understand what it means to keep the dc domains separate.
Click to expand...
Look at the textual drawing I posted.
it means one battery is connected directly to one growatt.
One battery and one growatt is one functional unit.
Make 2 identical functional units.
Test them as standalone units.
Then integrate them to make 120/240VAC split phase.
 
Visionguild said:
ok, I actually did already buy the 4 gauge cables with ends crimped. Will was pretty adamant in his video on these units that if using two or more in parallel there should be fuses. I didn't think I'd need breakers. I'm listening though. If you have a better solution. Thanks.
Click to expand...
They won't be in parralel on the 48 volt dc side.
 
smoothJoey said:
I deleted that post because I came up with a simpler topology which only requires you to crimp 2 wires per functional unit.
You don't need busbars or supplemental fusing for the new simplified topo.
At least on the dc side.
Click to expand...
two or more batteries, not inverters. Just
smoothJoey said:
They won't be in parralel on the system side.
Click to expand...
I can't see the drawing. Sorry, let me look some more, it's posted here on this thread?
 
Visionguild said:
Ok, so basically how will puts them together in that video of his.
Click to expand...
No.
Actually I'm only guessing.
I may or may not have watched his video.
Visionguild said:
So then from the ac outs I combine them in a subpanel somehow?
Click to expand...
There are 3 parts to the integration.
1. signalling with there communication wire.
2. configuration to make one unit the master and the other the slave.
3. AC wiring to be done by and electrician.
 
Visionguild said:
Oh, back a page. Ok, so basically how will puts them together in that video of his. I can do that for sure. So then from the ac outs I combine them in a subpanel somehow?
Click to expand...

smoothJoey said:
No.

There are 3 parts to the integration.
1. signalling with there communication wire.
2. configuration to make one unit the master and the other the slave.
3. AC wiring to be done by and electrician.
Click to expand...
Ok, so back to hiring an electrician. So I may as well have the local guy come do this for 250$ an hour. This is what I was hoping to avoid. Maybe I'll just wire them the way Will has them and not bother connecting them. forget about 240. Seems to be outside of the DIY element once I try to use them as the growatt manual suggest. parallel split phase.
 
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