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diy solar

diy solar

EG4 6500EX Problem

Please don’t use Romex for PV connections. Or the wago connectors. And definitely don’t run the same string of panels split between two inverters.

Watch some 6500 wiring videos on YouTube. This setup is looking like a fire hazard. I’m not trying to be insulting but this is dangerous stuff.

It’s time to start from the ground up with safe connections.
 
I will let others help you further diagnose but I am fairly certain you shorted the DC bus by paralleling the PV . I only say that because in my beginner stupidity I did the same.
 
Good.
Now find a regular 60/100w bulb and somehow connect it across the 125a circuit breaker.... don't worry it cannot draw enough current to run anything or blow up but it will tell us if the inverter is shorted.
If it lights about half bright and slowly dimms, inverter battery input side is good. If it lights half bright and stays there for more than....say 1 min the inverter is knackered.
Then test the other one.
With power only going to one inverter from the battery bank?
 
Please don’t use Romex for PV connections. Or the wago connectors. And definitely don’t run the same string of panels split between two inverters.

Watch some 6500 wiring videos on YouTube. This setup is looking like a fire hazard. I’m not trying to be insulting but this is dangerous stuff.

It’s time to start from the ground up with safe connections.
This is excellent polite advice, said much better than I would have.

@vitalssigns there are lots of great videos on youtube on setting these inverters up.
 
Good.
Now find a regular 60/100w bulb and somehow connect it across the 125a circuit breaker.... don't worry it cannot draw enough current to run anything or blow up but it will tell us if the inverter is shorted.
If it lights about half bright and slowly dimms, inverter battery input side is good. If it lights half bright and stays there for more than....say 1 min the inverter is knackered.
Then test the other one.
 

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You need one lead on the positive and one on the negative.
Do you have a base for the light bulb? Would make it alot easier.
Screenshot_20231122-175444.jpg
 
⚠ Given the presentation of facts in this thread, this is a dangerous situation not likely to get better by forum input in this thread. Please hire consult from a professional in real time, in person. ⚠
 
? You haven't pissed anyone off. We're all here to help. @Quattrohead knows a heck of a lot more than I do. I learned so much from him / reading his posts in threads when I was researching and planning.
Definitely listen to his advice.
I don’t doubt that Quattrohead knows his stuff but for sure I can say, he’s not God almighty with his righteous attitude. I asked him to explain in more detail what he wanted me to do, he did not.
 
The inverter is not getting power from the buss bar, through the breaker, to the inverter. Am I not right when I say the light bulb trick will not work if the inverter is not getting power?
It's not getting power because the class T fuse is blown... No power is getting to the breaker because the class T fuse is blown.
Since the class T fuse is blown Quattro (do you drive an Audi?) was having you connect 1 battery directly to the inverter with a pre charge resistor to determine if the inverter is shorted out. It's possible the inrush current blew the class T fuse but it's unlikely.
 
I understand, I did by pass the class T fuse and breaker to see if I could get a current on the negative and positive but their was none. At the battery bank when I did this had one battery bums flashing green, and the other 2 batteries had a red alarm light on.
 
Confirm power is available from one battery pack, use just that one battery for the testing of the inverters. I recommend just using the top battery from your stack, disconnect and switch off the others for now. We need to limit the complexity of the system while we test.
 
I don't know what else to suggest.
If you have a communication cable for the batteries you could try connecting them to a PC and see if you read any errors.
You might find some youtube videos on these inverters helpful as well.

This around 8. 5 minutes goes over start of install.
This covers wiring

 
Confirm power is available from one battery pack, use just that one battery for the testing of the inverters. I recommend just using the top battery from your stack, disconnect and switch off the others for now. We need to limit the complexity of the system while we test.
Thank you for the appreciative information, tomorrow’s a new day and I plan on picking up a resistor or a 48 volt light to help with the test. Happy thanksgiving and once again thanks for your help.
 
I don't know what else to suggest.
If you have a communication cable for the batteries you could try connecting them to a PC and see if you read any errors.
You might find some youtube videos on these inverters helpful as well.

This around 8. 5 minutes goes over start of install.
This covers wiring

Thank you and hope you all have a happy thanksgiving, even to the more righteous than others.
 
Thank you and hope you all have a happy thanksgiving, even to the more righteous than others.
Between the brain power here we will get it figured out.
You have a happy Thanksgiving as well. I can already taste the smoked baked beans and deep fried turkey...
 
Have a happy Thanksgiving @vitalssigns - and everyone, (Canadian T-G was back in October, home grown Turkey was so good). lol.
When you are ready this is my recommendation for initial testing:
Small steps approach:
Step one - disconnect everything from both inverters. EVERYTHING - remove the PV supply all wires from both inverters, switch off both.
Step two - disconnect all the server rack battery cables and switch them all off.
Step three - with nothing connected, turn on one rack battery - the top one. put a meter and see if you have 50-54 volts (like you did back at post #78 where you have the meter red to red, black to black on the top battery - it was showing proper voltage. Lets confirm it still does.
Step four - connect the neg from the top battery only to the neg of one inverter. Then connect a cable to the pos of the top battery.
Step five - Now attach one light bulb wire to this pos cable.
Step six - touch the other light bulb wire to the neg battery terminal for a few seconds - the light should come on dim, and stay dim.
Step seven - now touch that same light bulb wire to the pos terminal on the inverter for a few seconds. - the light should come on dim and fade out.

STOP HERE - report to the forum the follwing:
Did the light bulb glow dim when you touched the bulb wire to the battery neg terminal at step six. Yes or NO?
If YES - did the light bulb glow dim when you touched the wire to the inverter positive terminal in step seven. YES or NO?
If YES - did the light bulb glow dim and fade slowly or did it glow dim and stay steady dim, STEADY OR FADED?
We will move to the next steps once we have your replies to the above.
Gobble - gobble!
 
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