Need to run 220v well on 120v using one ecoflow pro.

dsutherland123 · Dec 5, 2023

Need to run 220v well on 120v using one ecoflow pro. I have an interlink on my panel for my 30amp gas generator. Can't afford another ecoflow pro. I do have an external LiFePO4 battery to help prolong the ecoflow pro. I was thinking of a step up transformer that I can wire between the ecoflow and my interlock panel. Would love some help? Thanks.

BentleyJ · Dec 5, 2023

If you could post the specifications of the well pump It would help determine the size of the transformer needed and if the load would exceed the capability of the ecoflow pro.

ChrisG · Dec 5, 2023

I was looking into doing somthing similar with an autotransformer with my soft start 240v well pump and a 120v inverter generator. After some research, looking at voltage drop of other leg of the transformer, decided against it. If I find a cheap autotransformer I will try it but not going to spend to $700 on a Victron for a test.

DIYrich · Dec 6, 2023

ChrisG said:
If I find a cheap autotransformer I will try it but not going to spend to $700 on a Victron for a test.

Growatt has a $300 transformer from 240v to split phase 120v. It should work in reverse.

ChrisG · Dec 6, 2023

DIYrich said:
Growatt has a $300 transformer from 240v to split phase 120v. It should work in reverse.

@DIYrich would like to get confirmation about this. Any links on the step-up function?

DIYrich · Dec 6, 2023

ChrisG said:
@DIYrich would like to get confirmation about this. Any links on the step-up function?

If it is a mechanical transformer, then it is the physics that the power goes both ways. If it is electronic (I have no idea if it is or not), it could be one way.

AntronX · Dec 6, 2023

It works both ways but your 120v Ecoflow will not have the surge capacity to start a well pump.

ChrisG · Dec 6, 2023

AntronX said:
It works both ways but your 120v Ecoflow will not have the surge capacity to start a well pump.

I’m not the OP and agree that his ecoflow wouldn’t be enough. Assume you are confirming the Growatt AT will do step up 120->120/240 split phase? Can’t find any documentation on the taps to use for this.

DIYrich · Dec 6, 2023

ChrisG said:
I’m not the OP and agree that his ecoflow wouldn’t be enough. Assume you are confirming the Growatt AT will do step up 120->120/240 split phase? Can’t find any documentation on the taps to use for this.

Video looks like wire wrapped cores. Power will flow both ways.

AntronX · Dec 6, 2023

ChrisG said:
Assume you are confirming the Growatt AT will do step up 120->120/240 split phase?

See this post: https://diysolarforum.com/threads/110v-to-220v-for-mini-split.72474/#post-919314

ChrisG · Dec 6, 2023

AntronX said:
See this post: https://diysolarforum.com/threads/110v-to-220v-for-mini-split.72474/#post-919314

Perfect. It is just like the Victron step up config. Thanks. Hope the OP finds this useful, just needs more power.

dsutherland123 · Dec 8, 2023

AntronX said:
It works both ways but your 120v Ecoflow will not have the surge capacity to start a well pump.

The surge capacity on my ecoflow pro is 7200 watts. I believe my surge is 2000.

AntronX · Dec 8, 2023

How many HP is the pump motor? Is it submersible?

dsutherland123 · Dec 8, 2023

AntronX said:
It works both ways but your 120v Ecoflow will not have the surge capacity to start a well pump.

The surge on the 3800w ecoflow pro is rated at 7200w. Would that be sufficient? Thanks.

ChrisG · Dec 8, 2023

Need more specs on pump. Do you have a meter that measures inrush? If you don’t have a softstart well pump like a Grundfos, it can take a lot of energy. My 1/2hp submersible ran at 1700 watts but needed ~9500watts to start. A Duromax 10kw generator wouldn’t even start it. Recommend checking your inrush current and post back.

dsutherland123 · Dec 8, 2023

AntronX said:
How many HP is the pump motor? Is it submersible?

I believe ( I put it in years ago and lost the paperwork) it's 1 hp and submersible. When I used a gas generator with 3500 watts total, it handled everything well (pun intended).

dsutherland123 · Dec 8, 2023

ChrisG said:
Need more specs on pump. Do you have a meter that measures inrush? If you don’t have a softstart well pump like a Grundfos, it can take a lot of energy. My 1/2hp submersible ran at 1700 watts but needed ~9500watts to start. A Duromax 10kw generator wouldn’t even start it. Recommend checking your inrush current and post back.

I don't have not know what am I rush is but I believe ( I put it in years ago and lost the paperwork) it's 1 hp and submersible. When I used a gas generator with 3500 watts total, it handled everything well (pun intended).

dsutherland123 · Dec 8, 2023

ChrisG said:
Need more specs on pump. Do you have a meter that measures inrush? If you don’t have a softstart well pump like a Grundfos, it can take a lot of energy. My 1/2hp submersible ran at 1700 watts but needed ~9500watts to start. A Duromax 10kw generator wouldn’t even start it. Recommend checking your inrush current and post back.

ChrisG said:
lI believe

BentleyJ said:

If you could post the specifications of the well pump It would help determine the size of the transformer needed and if the load would exceed the capability of the ecoflow pro.

Click to expand...

( I put it in years ago and lost the paperwork) it's 1 hp and submersible. When I used a gas generator with 3500 watts total, it handled everything well (pun intended).

dsutherland123 · Jan 20, 2024

I am the original poster of this thread. I have a different arrangement for the well. I would like some advice. Seeing as the well pump is the only appliance that needs 220V could I not connect it to my panel and use a step up to 220v and plug it into a 110v socket that's connected to my panel.

SupraSPL · Jan 20, 2024

Could a 240V submersible well pump run off of a dedicated 230V single leg inverter? My 240V inverter mini split doesn't mind it at all.

Need to run 220v well on 120v using one ecoflow pro.

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