Grounding terminal

Product Discussion BLUETTI EnergyPro Series
1

My EP500 Pro has a grounding terminal at the back near by the main switch.

The grounding terminal is not mentioned in manual…

In Questions about grounding, grid charging, firmware - #3 by BLUETTI it has been stated, that grounding is not needed…

What is exacly the function of this terminal? Has connection of the EP500 Pro to grounding any negative impact & no positive benefit to the device? Is this terminal realy useless??

Again my question, what exacly is the function of this grounding terminal???

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Hi @SteCol , This port is for grounding and is used to connect the ground wire.

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well @BLUETTI you answered 1 of 3 questions the customer asked and many of us would like to know the answers as well so we don’t have to ask as well.

Thanks

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Hi! If we were to connect the grounding terminal to the ground wire, would it be able to meet the bonding ground required by some of the EV Chargers? I tried to plug-in a bonding plug, but it trip the GFCI on the grid circuit.

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@randychan38 Energy storage power supply has this floating ground at present,you can buy this part try to solve this issue.

1: to purchase a Neutral-Ground Bonding plug as following.
Link address for purchasing:

2: Plug the Neutral-Ground Bonding plug into the AC outlet.

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Thank you! I have this plug but it trips the GFCI on the upstream grid input circuit. Even I have the Input Grid Amp set to 12A. The bonding plug doesn’t work.

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@randychan38 Can you try to connect EP500Pro ground terminal to the ground wire? Then insert the GFCI socket to see if it still trips.

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Thank you!
I will test and update here. Did you mean to insert the bonding plug?

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I finally have time to test to connect the Ground terminal on the back of EP500 (NOT Pro) to a ground connection in an AC outlet box. Then connect a load (Tesla EV charger at 110V) plus a Bonding Plug. I tripped the GFCI and it alos tripped the circuit breaker. While I was at it. I tried to measure the continuity in ohm between the ground terminal to the ground wire on the AC Input cable. The ohm values flustruate rapidly.

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The ground terminal and it’s use is dependent on your use, application and local codes. The best way to get information on how to use this, is to lookup generator hookups. This will tell you how you’re required to hookup a Power Station.

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I read the reviews and they say it works for gas generators just fine, but one person did say it did not work for his solar generator (Ecoflow). Have to wonder is it’s because of the batteries (which gas gens don’t have, obviously.)

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This question has still yet to be answered satisfactorily.

I’m still combing through posts to find the screw - I’ll just end up buying a few and testing since they only cost a few bucks, but it’d be good if it were just mentioned in the manual.

I can tell you it’s NOT an M5 screw; bought one of those today, based upon other people’s comments, and the M5 doesn’t fit. Interestingly, it does fit the new Apex 300 I bought.

I saw in a few posts across the internet, there’s a possibility of static, so this just gives us extra assurance that we the customers can ground the unit as well. However, plugging in an AC plug from standard household should also ground the unit, so that negates the terminal’s use.

I ran into an issue recently, and I’ve contacted Bluetti support but no answer yet. Where my EP500Pro, plugged into a GFCI will trip the switch on the outlet, but doesn’t flip the breaker. I’m still investigating.

It has something to do with having an AC load on as well. If you turn off the AC load, the unit charges just fine. I tried limiting the load - very small draw, and the problem still occurs.

So, at least for now while I’m testing, and waiting for Bluetti to help me figure it out, I’m trying to see what other combinations I can work with in order to get it to charge again while an AC load is on. I was worried something about the passthrough feature failed, and I’d have to send the unit back, but the same thing’s happening on my Apex 300, so I don’t get it…especially when it was working just fine like a week ago.

We had some wind warnings (Nova Scotia, Canada) recently, and wildfires, so I’m not sure if it’s a grid problem that could be effecting things right now as well.

Will keep poking around. Thanks all!

From what I’ve read so far - function - helps ground the unit in case of static. I’m thinking most beneficial to RV users - anyone moving the unit around, especially if there’s static build up. Would be good to have a grounding rod, connect the unit up to it. Maybe someone putting the unit in a carpeted area?

I can’t see any negative to providing an additional ground, if one’s accessible to you and the unit.

Useless? No, but may not be necessary for many who are using it in a home, attached to standard wall outlet, that may already be grounded via the panel.