diy solar

diy solar

Growatt and MPP gave different answers

I dont need one, I don't think I mentioned needing one, I have been told that of I use two 3000TL LVM ES's that one needs to be neutral bonded and the other not bonded, I have been told both units need to he bonded, been told neither can be bonded, you name it I have been told it so as far as I can tell growatt are of no use to anyone, even the "technical support" at responses are ya i think it should work or I'll dont see why not etc. Can't get a straight answer from anyone at the growatt dealer, signature solar has been of no use to me, not even sure why they sell something they know nothing about, gonna get someone killed with the answers they give
I emailed Growatt for clarification, but we have tons of customers who use these and set up the sync features no issues. I've never heard of an issue similar to this at all.
 
I emailed Growatt for clarification, but we have tons of customers who use these and set up the sync features no issues. I've never heard of an issue similar to this at all.
I emailed Growatt for clarification, but we have tons of customers who use these and set up the sync features no issues. I've never heard of an issue similar to this at all.
Well maybe if your tech support has answers it would be helpful, I shouldn't call and get multiple different answers for the same question, I just need an answer that is based on fact not "I think so" are possible customers allowed to talk to your engineers or it tech support as far as it goes
 
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Well maybe if your tech support has answers it would be helpful, I shouldn't call and get multiple different answers for the same question, I just need an answer that is based on fact not "I think so" are possible customers allowed to talk to your engineers or it tech support as far as it goes
Agreed, I'll definitely have this conversation with that team.
 
which is why us customers should buy split phase like the lv6048, lvx, or single phase 120 in a "cluster" and leave the transformers alone.

cant help but think these are an accident waiting to happen
Without the knowledge to set it up correctly, it's definitely a safety issue.
 
Yep. When I get in tomorrow I'll put one on our test bench and test for continuity. Easy test for us to do on site.
Sounds good, thank you, im still confused on some of the information I have recieved about needing one unit N-G bond and second one being non bonded, been asking so many questions and watching videos that I think some of my information is getting jumbled in my head and I'm remembering things wrong, I just want to be able to run split phase and not have any issues with my house wiring.

All I can find in the instructions is this very vague mention:

. GROUNDING INSTRUCTIONS -This inverter should be connected to a permanent grounded wiring system.
 
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Sounds good, thank you, im still confused on some of the information I have recieved about needing one unit N-G bond and second one being non bonded, been asking so many questions and watching videos that I think some of my information is getting jumbled in my head and I'm remembering things wrong, I just want to be able to run split phase and not have any issues with my house wiring.

All I can find in the instructions is this very vague mention:

. GROUNDING INSTRUCTIONS -This inverter should be connected to a permanent grounded wiring system.
There is no N/G bond internally, as tested on 3 units with a continuity test. You will need to chassis ground the unit either directly, or through your panel.
 
There is no N/G bond internally, as tested on 3 units with a continuity test. You will need to chassis ground the unit either directly, or through your panel.
Chassis ground as in a wire going from the case to a earth ground rod or wired directly to my breaker panel? If I build a stand alone generator and wire it to a separate breaker panel and use receptacles wired to breakers to make a solar generator I would wire as normal and add a ground rod?
 
Chassis ground as in a wire going from the case to a earth ground rod or wired directly to my breaker panel? If I build a stand alone generator and wire it to a separate breaker panel and use receptacles wired to breakers to make a solar generator I would wire as normal and add a ground rod?
You should already have a ground rod, for your service. Run a ground wire along with the feed wires and connect to the ground terminals, in the inverter, and panels.
 
You should already have a ground rod, for your service. Run a ground wire along with the feed wires and connect to the ground terminals, in the inverter, and panels.
Thank you, wasn't sure if I could share grounds, I have an old abandoned earth ground rod that is in my window well, thought about using that if I build a solar generator, not sure of I can use it if tied into my house though
 
All grounds, once connected. Become part of the grounding electrode system.
 
Thank you, wasn't sure if I could share grounds, I have an old abandoned earth ground rod that is in my window well, thought about using that if I build a solar generator, not sure of I can use it if tied into my house though
All grounds should be connected together. To form a single system.
 
All grounds, once connected. Become part of the grounding electrode system.
So If I use the house panel I use the panel ground and if I build a standalone system using extension cords like a gas generator I could use the abandoned ground rod? Could I use my water main ground as my ground to keep me from needing to access my panel ground?
 
Whatever you use, it must be connected to the rest of the grounding system.
 
Tim is right. Most connections for most houses happen in the panel, but thats why on older houses they only have 2 slot plugs - no grounding. If you connect both 3ks to the same panel, the grounds are shared.
 
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