My Dad’s home is off-grid. A 14Kw sine wave generator is wired into the home breaker panel. There are 240v and 120v circuits.
We have two AC500 and four B300S with plans to integrate them in split phase mode. The “AC500 Power Suite” is on order. We’ll be hiring an electrician to handle the installation for us.
My question is - What charging setup should I request of the electrician given the AC500’s needs? Do I want one 50A 120v outlet per AC500? Something else? I’m finding documentation on our particular setup almost nonexistent.
Your electrician must wire a 240 VAC 50 A outlet for the AC500 units. Each AC500 must be connected to one of the two phases, and the special Communications cable must be connected to both AC500 units. Finally follow the user manual steps to setup the Split Phase operation so one AC500 is Master and the othrr is Slave. Use only the Master to turn and off the AC output at its screen or on tbe Bluetti app.
Are you saying we would charge both AC500 from one 240 VAC 50 A outlet (NEMA 14-50)? That would require a splitter of some kind correct? Why not have the electrician provide two 120 VAC outlets for charging instead?
One two-pole 50 A breaker can protect both AC300 units, but each unit has to be powered by a separate phase each. BLUETTI does sell the special charging cable, but if you can wire the two original 120 VAC cables that came with the AC300 into a single 240 VAC plug, it can be better. Your electrician should understand. I know because I am an EE with 38 years of experience.
120 is fine as long as you have each unit on a different breaker and and each breaker on a different leg in the panel, usually an even breaker and an odd breaker. I have 2 AC500 in split phase and both individually charging of AC wall outlets.
I’m away on vacation at the moment but I will try to explain in more detail.
I set up the AC500 units identical to the split phase video and illustration by Bluetti. They are very strait forward.
The confusing part for me was charging using the two single charge cords supplied with each AC500 unit while in split phase mode, I kept getting alarms and errors. Rather than buying the split phase charge cord from Bluetti, I spoke to an electrician and he explained to me what needed to be done to get the individual charge cords to work.
I will start by saying I’m not an electrician and my explanations demonstrate that fact.
I selected two 15amp outlets in my garage that were on separate breakers. You can check this by putting one prong of your meter in the smaller hole of one outlet and the other in the smaller hole of the second outlet. Make sure your meter is set to proper voltage. Use extension cords if the outlets are far apart. If the meter reads around 240v they are on separate breakers, if the meter reads zero they are on the same breaker.
The next requirement is the two breakers need to be on different legs of the panel, typically even breakers are on one leg and odd breakers are on the other. I had to move one of my breakers in order to have one AC500 on an even breaker and the other in an odd breaker. Of course, if you’re working in a panel you need to be extremely careful or have a qualified electrician do the work for you.
I hope this simplistic overview is of some help. I will send photos when I return if you need me to. Take care and good luck.