I want to wire my AC300+B300 configuration into our home power system and just need to clarify how much of the house I can support from a load perspective. My understanding is that, despite the fact that the AC300 has six 20am and one 30 amp outlets, it’s max continuous output is 3,000 Watts or (3000W/120V=) 25 amps. Does that sounds about right?
Most of critical circuits I’d like to power are on a subpanel in the laundry room. If I could, I’d power 6 breakers to feed a.) 2 rooms’ wall plugs, b.) 2 rooms’ ceiling lights, c.) my home network routers and d.) the kitchen refrigerator. The room wall plugs and ceiling lights are probably max 100 watts each or (4x100/120 =) 4 amps. The frig is 3.5amps and the routers are less than an amp so this seems theoretically fine (4+4+2=10), but the circuit breakers are all 20amp breakers or 6x20=120amps.
Can I just downsize the breakers in the transfer switch box to 5amps each to make sure I don’t overload the AC300?
There are 2 primary criteria re your Q. One is the power load, the other is time. In my house, the largest load is a split system air conditioner and it will run from a 3kW output, but not for a long time. However, if I tried to run other heavy loads such as an electric kettle and an induction cooktop at the same time it will overload.
You need to look at each of the loads you want to run, work out which when run at the same time won’t overload the Bluetti. At the same time calculate how many Wh i.e. how long you run those loads for within the battery capacity.
The breakers you have are fine as is, as the AC300 has it’s own overload protection and should reset once you disconnect the overloaded circuit. Also, in the calculation of time is if you have solar input at the same time you are using power. It’s all about managing the power you use and for how long you use it. :)
Forgot to mention, I have an AC200P and can run all of the items you note from it in a power outage. In fact the AC180 I have can also run them. What I need to manage is for how long I do run them and how I recharge them when needed. I have portable solar, an inverter wired in my 4x4, a Honda 2kVA genset and as a last resort, if the power outage is local and other areas still have grid power, find out how many friends I really have, lol and go pay a visit for a Turbo charge. All about redundancy (options).
Thank you Mandp! Good to know I do not have to worry too much about switching out the breakers to lower amps, but I’ll work with my electrician to make sure I don’t mix up what I could do vs what I need to do. Agreed also on the capacity question. I’ll probably buy a second B300 to give myself more cushion, but I’m installing a small array to provide an input source to recharge (and hopefully cut my utility bill slightly), with a backup 3600W gas generator for cloud/emergency needs.
