EG4 6000XP parallel operation question with a load balancer

[chadjones99]

Question if someone could just verify what Im seeing. I have been running off of 1 x Eg4 6000 XP for the cabin for about 8 months. No issues other than once in a while we can overload 1 leg and the inverter would trip off line and reset ( maybe 2 or 3 times in 8 months ) I added a 4 kw load balancing transformer which did help a lot . We have just added a 2nd Eg4 6000 ( so we can run the well to pump up the sister tank without having to kill the breaker to the microwave,etc ) I got them tie together and are working. But here is what's weird to me the master inverter seems to be caring more of the load. example inverter 1 will show 40 % load and inverter 2 shows 22 % load. Then when we have inverter 1 at 75 % load inverter 2 showed 43% load. should they not show the same or close to the same load sharing ? ( I had turned off the breaker to the load-balancing transformer during the initial commissioning and testing. I did also breaker in the transformer not thinking I needed it but to see what it would do, it did not change anything as to the % load shared between the 2 inverters. I also notice that when all the heavy loads are off the inverters, inverter 1 shows 8 % and inverter 2 shows 6 % , so at the low end they are very close.
Is this normal is my question?

 

[ScrotpusGobbleBottom]

I have notice the same thing with my 2.

 

[chadjones99]

I have notice the same thing with my 2.

OK thanks, maybe it has the master inverter carry the load and only takes a % or what it needs from 2nd inverter. I mean if one of them is to carry more of the load I would expect it to be inverter #1 , but at the same time I would think it should be a 50 % split

 

[ScrotpusGobbleBottom]

OK thanks, maybe it has the master inverter carry the load and only takes a % or what it needs from 2nd inverter. I mean if one of them is to carry more of the load I would expect it to be inverter #1 , but at the same time I would think it should be a 50 % split

Its always inverter 1 in my observation. Not sure why.
I have noticed its pretty evenly split when I run my clothes dryer. 54,46 or so
It happens on AC as well.

I stopped paying attention to it, Never had an overload with 2 yet.

 

[42OhmsPA]

Is your AC output wiring equal length?

My AIOs of a different brand are damn near identical in output from 1W to 15+KW; I made sure AC output wiring was the same length from each AIO to the breaker.


Edit to add, battery cable total + and - length should be the same between them as well.

 

[ScrotpusGobbleBottom]

Is your AC output wiring equal length?

My AIOs of a different brand are damn near identical in output from 1W to 15+KW; I made sure AC output wiring was the same length from each AIO to the breaker.


Edit to add, battery cable total + and - length should be the same between them as well.

Mine is not. Inverter 1 has shorter ac input and output but longer DC input.

 

[42OhmsPA]

Mine is not. Inverter 1 has shorter ac input and output but longer DC input.

That may explain it, different resistance due to length, current takes the easiest route. Do you see a lower draw on the DC side of i1 compared to i2?

 

[ScrotpusGobbleBottom]

let me find out

 

[chadjones99]

mine are very close to the same length ( AC and DC ) within a few inches

 

[42OhmsPA]

@EG4TechSolutionsTeam
Should parallel 6000XPs have equal load distribution?

I got them tie together and are working. But here is what's weird to me the master inverter seems to be caring more of the load. example inverter 1 will show 40 % load and inverter 2 shows 22 % load. Then when we have inverter 1 at 75 % load inverter 2 showed 43% load. should they not show the same or close to the same load sharing ?

 

[chadjones99]

Yes that is the question , why are they not sharing the load the same amount And is that normal ?