Need help selecting a 48V AIO

[beckkl]

Hi, I was hoping someone could provide some input on selecting a 48V all in one. I have an off-grid property currently running on 12V, and just finished building a 48V seplos battery. My power needs are minimal, but capacity is a big deal as I don't have a lot of PV. I need to run my camper AC occasionally, and also have a 120V shallow well pump. Currently both of these run fine from my 2300W inverter generator, but I do need the surge capacity (3000W) sometimes with the shallow well pump. When it runs initially, I also need to ensure that there are no other loads on the generator. Even then sometimes it trips.

Anyway, I was looking at the Eg4 3000 ehv-48, as it has a 5s 6000W surge, which I think would help. However, I'm still wondering if that is overkill. I don't anticipate ever running the AC off the inverter, so unless the pump is running, I could get away with a much smaller inverter.

I also was looking at growatt models but it seems like EG4 has sort of taken the lead.

 

[OffGridForGood]

Anyway, I was looking at the Eg4 3000 ehv-48, as it has a 5s 6000W surge, which I think would help. However, I'm still wondering if that is overkill. I don't anticipate ever running the AC off the inverter, so unless the pump is running, I could get away with a much smaller inverter.

In Rush on pump motors can be very high, it seems best to measure it - with a meter with this feature. If the EG4 3000 has the 6kW surge you noted this would seem adequate for that pump. A test could confirm it for you prior to purchase. I can't think of a 'much smaller inverter' that will start a typical well pump. My own system (when I had just one Inverter) started the well pump without any issue at all, but this is 6kW inverter.

 

[DIYrich]

For the few extra bucks, install the overkill. You won't regret it.

 

[beckkl]

In Rush on pump motors can be very high, it seems best to measure it - with a meter with this feature. If the EG4 3000 has the 6kW surge you noted this would seem adequate for that pump. A test could confirm it for you prior to purchase. I can't think of a 'much smaller inverter' that will start a typical well pump. My own system (when I had just one Inverter) started the well pump without any issue at all, but this is 6kW inverter.

Thanks. Well, I do know the surge on my generator is 3kW (2.3kW running), and it just gets the thing going. Sometimes thought it will trip the breaker and I have to reset it and try again. But it has always gotten it going eventually.

The EG4 seems like it should handle it provided the specs are real. If I remember Will tested it and it met the specs. Thanks.

 

[beckkl]

For the few extra bucks, install the overkill. You won't regret it.

Very true.