Fix It: Bluetti AC300 - GFCI/AFCI outlets and Neutral Bonded Grounding

MyBluetti - Unofficial Resources for Owners

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In this video I will show you some issues I found with my dual AC300 split-phase environment and how it handles GFCI/AFCI outlet and breakers and how I choose to resolve them for a safer environment.
Note: your fusion may allow the ground to pass. There are several versions out there with different internal designs. You will need to verify your fusions' configuration in your environment. Your environment may differ and require a different configuration or may not experience this issue.
Please note: I am not an electrician. I am a Bluetti AC300 owner who is working to build a complete AC300 Split-Phase system both for my home and as a portable solution. I thank the many Bluetti employees who have helped me and other owners who have worked with me as we work together to identify the requirements to run in Split Phase Mode with full solar and grid charging. Always take safety precautions when working with electricity.

Опубликовано:

9 авг 2022

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Комментарии : 31

@luxurycardetailingthehamptons 11 месяцев назад

This is super helpful. I have an AC500 and was not aware of this. I use it for my mobile detailing business and decided to wire a GFCI outlet for my pressure washer. Tested the GFCI and it didn't trip, which left me scratching my head. Because of this video I now understand what's going on. I think getting a neutral bonding plug should fix my problem. Thank you.

@craigcastonguay7898 Год назад

David, Thanks for the video series on the AC300 and the way you are working through them. It has been helpful and also good to know others are seeing the same problems I have been seeing.

@MyBluetti Год назад

Absolutely... Figured no point in others struggling through something that I've been able to resolve... Let me know if you have any specific issues or questions

@seanphillips7766 Год назад

Thank you! I was having issues with my Jackery Explorer 2000 Pro not running my gas furnace due to it also having an unbonded neutral out of the inverter. I gave this a try and it worked like a charm. I'm only using this setup in case of an emergency power outage but it's nice to know it works. Thanks again I was pulling my hair out trying to find a solution before finding your video.

@MyBluetti Год назад

You're very welcome!

@vicwilliams9925 Год назад

Thanks help out alot

@MyBluetti Год назад

No problem 👍

@johntate5284 Год назад

Wow, this was very helpful! Although i am not running split phase (as i only have the 200 Max), i do have a single phase sub panel with transfer switching for 4 circuits. I want to use an EMP shield but the floating neutral is also an issue with Bluetti's single phase units and Bluetti support says that using a common ground for the AC200 Max is not recommended or supported.

@MyBluetti Год назад

Hi John. I would check back with EMP Shield. Even if you resolve your floating neutral issue I don't think they will fully support Solar Generators.... If you're putting your EMP Shield in your transfer switch to protect your power lines from a surge then this would work to shunt a surge down the ground wire. However if you're planning on putting a EMP Shield on your solar coming into your AC200 Max then it's not going to work due to the Lithium Iron Phosphate batteries.

@johntate5284 Год назад

@@MyBluetti Thanks for your very helpful information on the EMP Shield. I do have that already installed on L1 and L2 of the main panel. I also will put one in the transfer switch to clamp and shunt to ground any circuits that are switched to the solar generator. Not sure, but i also have a 48 VDC EMP shield for the battery that i can install on the output of the AC charger. I know that Sol-Ark offers pre-installed EMP shields in some of their all in one inverter transfer switch charge controllers. Goal Zero also has a solar generator with the EMP shield built in. Thanks again, will post something when i get everything hooked up and running with no smoke:)

@johntate5284 Год назад

@@MyBluetti Hey, got the the same information from EMP shield about the Bluetti. Thanks again!

@funkride8759 10 месяцев назад

Hi, I’m still learning. I like your videos. Quick question. will a Reliance R510A Pro/Tran 2 have this issue?

@JaneHarmony-ne7wm Год назад

Very useful and helpful. thank you. You mentioned concern about complying with electrical code in this video. I noticed in another one of your videos the switch disconnect for your PV solar into your setup. Aside from the bonding plugs and PV Solar disconnect switches, what other modifications have you made to your Bluetti AC300/500/batteries + PV solar + transfer switch system setup to be compliant with NEC2020/2023? I am wondering how to satisfy the ESS disconnect (Switches?) requirements. Any thoughts? Thank you.

@MyBluetti Год назад

Hi Jane - my local county also required a Rapid Shutdown and an external disconnect for my solar panels. Since this video I removed the Bluetti fusion box and went with a y-adapter instead. The y-adapter allows both the master and slave to have access to the bonded neutral from a single unit.

@rlee23 Год назад

Hello David, Thank you for your videos! I'm still a newbie and know enough to get myself in trouble. I'm still confuse about bonded and floating neutral but one day i will understand. I recently just purchase the AC500 and B300S. I want to use the AC500&B300S to back up my house when the gird is down. I have install a Reliance Controls R306A on the main panel for this purpose. I've also install a Reliance Control CSR202 on my sub panel. The CSR202,AC500&B300S will run my pool pump 24/7. I will charge the AC500&B300S with the DC/solar input only. I will not use the AC input for charging while hook up to the transfer switches. Will I have issues with bonded and floating neutral using these transfer switches and charging only with the DC input. Your advise is greatly appreciated

@MyBluetti Год назад

Hi Ronald - Sorry for my delay getting back to you. With the Reliance transfer switch that you installed you probably do not need to bond your neutral and ground together on the AC300 because this transfer switch does not break the neutral wire from your main grid. This means that your AC300 neutral and your grid neutral share the same wiring and therefore have access back to the bonded neutral that already exists in your main breaker box where the grid come in. This also means that you don't want to bond at your AC300 because this will cause an alternative path ground faults. The best way to verify is to check the voltage between your ground and neutral wires when you have your AC300 connected. You should see little or no voltage between the two wires.

@MrKasper25 6 месяцев назад

Hi, thanks for the video, my issues is that the ac300 wont charge when i plug it to the gfci it will trip it. Bluetti keep sayin is that is floating ground but i have shown then it is bounded. They keep sayin problem is on my end but i had an electrician over and said all my plugs are correctly and with the tester shows it is ground bounded so it should be workin fine. So if i turn off the dc and ac output it'll charge fine without tripping the gfci. But if i turn ac output on to run loads it will trip the gfci.. any help will be appreciated.

@stiversfamily Год назад

So if my N and G are bonded in my main panel. If I build the cable to terminate each ac300’s G and N to the main panel it could blow the AC300’S if I have a 30a split phase charging cable connected also?

@MyBluetti Год назад

So it's not that simple and depends how you are connecting your AC300's to your home. If you're using a transfer switch that switches the neutral wire then you may have to bond the ground and neutral together at your AC300. Otherwise if your transfer switch does not switch the neutral wire from your main grid, then you already have access to the main bonding at your main panel and no change is required to get your GFCI's working. What type of transfer switch are you using?

@PlateauPosse Год назад

Wasn't aware of the bonding issue, as nowhere is it addressed in the user guides. How would I identify which Fusion version I have? Spoke with a nice lady at Reliance who was somewhat familiar with the issue but couldn't provide a solution. What say you?

@MyBluetti Год назад

Depending on what model of Reliance you have, this may not be an issue for your environment. It only occurs when you have a transfer switch that isolates the neutrals.

@patriotplumberreport Год назад

If I wanted to run my whole house including my water heater and heater/ac with heat pump. What sub panel should I use?

@MyBluetti Год назад

Hi PatriotPlumber - Sorry for my delay. If your house isn't too big and your power needs are relatively small you can probably run your entire house with an AC series solar generator. I personally went with the Generac HomeLink transfer switch because it gave me up to 16 circuits that I could run/transfer to my solar generator. For my home the 16 circuits is about 50% of my home's usage. Large items such as my Dryer, Oven and whole home ac unit are still ran off the grid at this time.

@patriotplumberreport Год назад

@@MyBluetti thanks for getting back to me. No worries on the reply I totally understand life and family can be consuming lol. My house is quite small and I've done my math and all the important loads will fit into a Reliance 50amp 10 circuit transfer switch. Or is there a better one you recommend?

@MyBluetti Год назад

I like the Generac HomeLink, but some people don't like it because it only allows you to switch all circuits between power sources (grid/generator). Some of the Reliance transfer switches allow you to switch each circuit independently and allows a little bit more control to what goes over to the generator.

@simon359 Год назад

I’ve seen videos where people with gas generators hooked to their RVs needed this three prong bonding plug! My question to you is why the transfer switch wasn’t hooked up to the main panel to make it bonded? Also, any solar generator is usually open at the plugs. They only put in the third prong because a lot of cords need to fit, otherwise they wouldn’t fit in the two prong outlets of some of these solar generators. At this point, it seems like the best way is to get a separate ground rod and tie your transfer switch ground to the rod. For a true ground.

@MyBluetti Год назад

Hi Simon - In my case my transfer switch separates the neutrals from the main grid. Not all transfer switches do this and in these type of transfer switches you would have access back to the main panels bonding plug. However, since mine is isolates the neutral I have no access to a bonded neutral and I must create one on the "generator" side. Before I go to deep into this, this video shows an old configuration of my system. I will need to do an updated version.

@simon359 Год назад

@@MyBluetti In my situation, I’ve built my own DIY solar system. I actually started with a 24 V system and now run my house off 48 V as much of the lights were flickering or when the refrigerator cycled I could see the power fluctuate on 24 V probably OK for a cabin but not a house. Anyway, my problem is still trying to figure out if my Victron inverter is open (floating) or grounded, as it’s tied to my main panel. The electrician put it into the main panel with one of those slider switches, but I don’t think he understood enough about DC. I used to have everything hooked to a separate ground rod, but since he connected it to the main panel, it’s already grounded there. So far nothing bad has happened, so I hope it’s right? I’m still trying to do more investigation into finding out whether the inverter is open or ground connected. I had all my charge controllers and inverter connected to a small ground bar. Then I connected the ground off the chassis of the inverter to a short wire to the out of my inverter that goes to the main panel. Grounding is one of the biggest misunderstood parts of having a grid tied or off grid system! I sure wish more people would go end of this subject, otherwise I’ve got everything else figure it out! 🖖

@markbsb7176 Год назад

Strange I am not connected to my transfer switch and I am getting the ground error that you have.

@MyBluetti Год назад

Hi Mark - Can you explain? You should expect to see an open neutral when your Bluetti is not connected to a transfer switch.

@John34. 3 месяца назад

This shit is so confusing. I want to know if you could help me out. I have a floating neutral bluetti 200 max with battery and i have a interlock system that will be set up in the main panel. So I will have a 50amp inlet box set up that will go directly to the panel. So I will be able to land the neutral wire on the neutral bar along with ground on the same bar. So Neutral and Ground will be bonded in the main panel. This is supposed to be code for NEC at means of first disconnect is the main panel. There is a massive forum on this which someone at a company sells a transfer switch thing that supposedly fixes all these issues and they explain alot of this stuff, but the forum their is alot of arguments as to what is right and true. This guy says hes taught NEC for years. He also knows a ton about bluetti apparently and is in contact with them. He says you cant use a neutral plug to ground neutrals in the bluetti that it is dangerous and illegal or doesnt match codes. He also says the only way to do that is buy his patented switch that has the Neutrals switched or something. He said the other option is what I listed above that I am doing but then he says bluetti gens are not meant to have the neutral bonded and bluetti doesnt allow this. He goes on to say thats why he has tons of customers buying his product because they burn their generators up by grounding the Neutral incorrectly. I am so pissed and confused. This is what I am wanting to do. If you could watch from 10 minutes in the video onward. It works and is code but that Electrical guy in that forum was saying this would eventually fry the bluetti? Im trying to figure out if this is true. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Tf7cEsdXJoU.htmlsi=JkeKB0Q3awwA7v0G