Hello,
Can anyone answer if I use the NEMA TT-30 plug on an AC300, do the other six standard AC 120 outputs still have power output? <— Of course, I understand that I can’t go over the 3000W usage of the entire system of all the plugs combined, at any one time.
Thank you,
Will
This question is in preparation for a small project in the winter months and would like to add a small off grid subpanel using the AC300 TT-30 connection, which will connect all my ceiling fans and maybe an extra “solar” outlet in the garage to utilize opportunity loads for Washing/Drying (gas dryer) clothes. While at the same time, still be able to use the standard outlets for several electronics.
Yes, all the various AC outputs are always all connected to the inverter’s output. I use my TT-30 plug to connect to a transfer switch in my home, and then a couple of the 5-20 outlets to power things like my Ryobi battery chargers that are close by the AC300.
Awesome, thank you. Hope to start Phase III in Jan. Hopefully, the B300 battery is not discontinued. It would be nice to have a 5kw battery that could work for the AC300/500.
I have the AC200 Max ( and 2 B230 expansion batteries) which also has the TT30 plug. I use that plug and connect to my transfer panel that powers 4 critical circuits in my house. I then have the regular outlets that i can still use - such as for my wifi router and chest freezer that are close by to my ac200 Max system. Heres a picture
I would like to connect my AC300 to the 50 amp generator receptacle (I have interlock as well) that is connected to my circuit panel. I am guessing I can get a 50 amp generator cable, then a 50amp to nema tt-30 adapter to allow this to connect to the AC300. Does that sound correct to you?
Are you aware that if you have an outage that lasts longer than your battery capacity that your unit will power down and never repower your critical circuits in the sub panel nor your freezer even after grid power returns? No matter how long you wait, AC output will never restart on the Bluetti and it will actually block those circuits from the grid until you notice and are present and can turn the output back on.
For the guy asking about using a 50 amp receptacle wired to a transfer switch or interlock, it has two hot legs, one for each half of the panel that are each 120v, 180 degrees out of phase from one another.
There are special adapters that will combine the two hot legs of a 50 amp connector into the single hot of a 120v 30 amp connector like the TT-30 so that you can energize both sides of your panel. But be very, very careful not to use it in any situations where true 120/240 is connected or it will be a 240v dead short.
When you say “not to use it in any situations where true 120/240 is connected” I assume you mean I am ok so long as I do NOT have any 240v breakers switched on in the breaker box. Is that correct?
Correct. Those adapters are dangerous. It is not required that anything even be connected to the TT-30 end for the connector to dead short the 240v, 50 amp circuit if at any time the 50 amp side goes hot and it is still plugged in.
Fully aware thanks! If the grid was down, I would not be leaving the system alone for a long period of time where what you describe would be the case. Also I have a Honda EU 2000 invertor gas generator that I use to recharge the unit ( with 2 T500 adaptors) should the outage be lengthy in duration. I can recharge the system like this while simultaneous using it to power the four circuits. I have successfully done this during a 39 hour outage that occurred - worked great!
Yes, that is correct. In my case I have a 30-amp generator connection to the transfer switch, so it was a tt-30 to the 30-amp generator cable. Same idea.
Well, for that to happen there would have to be two AC power sources connected at the same time, and that must never ever be the case. In the example of a power failure and using this equipment to power some circuits, it would imply that the tt-30 to 50-amp socket was connected to a live grid connection, in other words back-feeding the grid. That condition must never exist for all sorts of reasons. So with that assumption in place (no connection to grid power) then the tt-30 to 50-amp socket presents no danger at all. It would simply mean that across the two “hot” lines on the 50-amp socket there would always be 0 volts, but from either “hot” line to neutral there would be 120 volts.
If you use a TT-30 combiner type adapter for a traditional 50A rv connector it internally bonds the single hot of the TT-30 to both hot legs of the 50A connector. You most certainly do not need more than one source connected to direct short the 240, hence my warning that nothing even needed to be connected on the TT-30 end for the short to happen. Inside the adapter itself both legs of the 50A plug are bonded.
If you need to see the fire for yourself, just accidentally leave the adapter plugged into the 50A receptacle with nothing on the TT-30 end when the transfer back to grid happens. I’ve seen it at the campground. I’ve Seen the arc flash from the load center too.
Point being, extra care needs to be exercised with the combiner type 30A to 50A RV adapters.
