diy solar

diy solar

Please point out my mistakes

Zigzags

New Member
Joined
Jun 6, 2024
Messages
47
Location
Calgary Alberta Canada
Please point out my mistakes in the photo I have attached. Just wanting to correct anything before installing.
Thank you.
Here are the links to my purchases in case it helps.

Panels:


Inverter:


Controller


Fuses/breakers





Batteries


Battery monitor


Wire




IMG_4906.jpeg
 
Last edited:
Others will be much better at pointing out any finer details as I'm still very much a novice but one thing jumps out at me and that's voc with the two panels in parallel the voltage will likely be around the 30v mark, looking at the mppt SSC it only said that voc needs to be below 150v but no mention of minimum operating voltage. You might be fine but there's also a chance the controller won't work with your panels in parallel in which case you will need them configured in series
 
Others will be much better at pointing out any finer details as I'm still very much a novice but one thing jumps out at me and that's voc with the two panels in parallel the voltage will likely be around the 30v mark, looking at the mppt SSC it only said that voc needs to be below 150v but no mention of minimum operating voltage. You might be fine but there's also a chance the controller won't work with your panels in parallel in which case you will need them configured in series
I've got a couple of those SCC's. The minimum voltage is battery +5v for starting so there's really no minimum.

Looking at the drawing:

SCC to batteries 6AWG is fine.

Inverter to RV panel is less than 30a so 10AWG is fine.

Batteries to inverter should be 3/0 at least, preferably 4/0 if you can make it fit.

Your SCC negative and your Inverter negative need to come together BEFORE the shunt, then through the shunt to the battery. As drawn now the shunt isn't going to read any of the charging to the batteries.

Have you already purchased the parts? If not, consider the Ionic 3Kw LF AIO for $1400 canadian. It's got the SCC, shore power in, and AC out all in one unit. I used the 2Kw version for my camper and just pulled the entire converter out of the loop and replaced it with a breaker panel.

Other than that shunt placement, I fail to see any blatant issues.
 
I've got a couple of those SCC's. The minimum voltage is battery +5v for starting so there's really no minimum.

Looking at the drawing:

SCC to batteries 6AWG is fine.

Inverter to RV panel is less than 30a so 10AWG is fine.

Batteries to inverter should be 3/0 at least, preferably 4/0 if you can make it fit.

Your SCC negative and your Inverter negative need to come together BEFORE the shunt, then through the shunt to the battery. As drawn now the shunt isn't going to read any of the charging to the batteries.

Have you already purchased the parts? If not, consider the Ionic 3Kw LF AIO for $1400 canadian. It's got the SCC, shore power in, and AC out all in one unit. I used the 2Kw version for my camper and just pulled the entire converter out of the loop and replaced it with a breaker panel.

Other than that shunt placement, I fail to see any blatant issues.
Thank you so much, I will definitely fix the shunt. I have purchased all of this already.
Stupid question but is 4/0 the same as 4awg? I hope so as I did purchase 4awg for the battery to the inverter. I just forgot to add it to the drawing 🤦‍♂️
 
I've got a couple of those SCC's. The minimum voltage is battery +5v for starting so there's really no minimum.

Looking at the drawing:

SCC to batteries 6AWG is fine.

Inverter to RV panel is less than 30a so 10AWG is fine.

Batteries to inverter should be 3/0 at least, preferably 4/0 if you can make it fit.

Your SCC negative and your Inverter negative need to come together BEFORE the shunt, then through the shunt to the battery. As drawn now the shunt isn't going to read any of the charging to the batteries.

Have you already purchased the parts? If not, consider the Ionic 3Kw LF AIO for $1400 canadian. It's got the SCC, shore power in, and AC out all in one unit. I used the 2Kw version for my camper and just pulled the entire converter out of the loop and replaced it with a breaker panel.

Other than that shunt placement, I fail to see any blatant issues.
So I made those changes and I might go with 4awg if it fits in the scc when running to the battery.
I already purchased it thinking it was the same as 4/0 to run from the inverter to the battery. “thank you for setting me straight on that”.
My only other question is:
Is my Battery disconnect fine in this picture? Can I run it on a negative line? Or should it be on a positive?

IMG_4914.jpeg
 
4awg from the SCC is overkill, but if it fits and you have it, go for it.

The battery disconnect should be on the positive side.

The fuse should be 300a to the inverter.

Looking good! (y)
 

diy solar

diy solar
Back
Top