Unbalanced inverter input

[Naptown]

I have a situation where I am using 2 208V single phase inverters tieing into a 208V three phase service.
Any one see any problems with this. The input will be unbalanced by 40A on one of the legs (higher current input) The service is a 600A.

[Mike90250]

Well, it's not an inverter problem is it? More like power co is going to see un-even loading/feed on their side ? The 2 inverters output 40 amps onto 2 of the 3 pow co lines, so the inverters should have no trouble. And 40 a of imbalance on a 600 A feed, is less than 10% difference, so that's OK with me. But will the pow co ding you for it ??

[Naptown]

Well, it's not an inverter problem is it? More like power co is going to see un-even loading/feed on their side ? The 2 inverters output 40 amps onto 2 of the 3 pow co lines, so the inverters should have no trouble. And 40 a of imbalance on a 600 A feed, is less than 10% difference, so that's OK with me. But will the pow co ding you for it ??

No it is not an inverter problem

[Sunking]

If unbalanced yu will need to carry a grounded circuit conductor.

[Naptown]

If unbalanced yu will need to carry a grounded circuit conductor.

Inverters are L1 L2 N

[Sunking]

Is the service Delta or Wye?

[Naptown]

Is the service Delta or Wye?

wye

[Sunking]

Thought it was just checking. It should work, but the utility may not like it. Only problem you might have is high neutral current which could cause over heating.

[Naptown]

Thought it was just checking. It should work, but the utility may not like it. Only problem you might have is high neutral current which could cause over heating.

Unbalance is less than 10% of rated service. There are currently 8 3ph breakers in the panel 5 of which are unused. ( this is mostly running large 3ph heat pump package units.

[LucMan]

How does that work with the peak demand meter as far as billable KWH?

[Naptown]

The same way the meter will deal with an unbalanced load. The meter reads each leg separately from what I understand. Perhaps Dereck can answer this better.