The second picture here is how i wired mine, have generator hooked with manual switch over, all Grounds are hooked together and all neutrals are bonded together, only 1 neutral to ground bond is at house panel, generator is grounded with neutral to frame bond removed, Joe. https://watts247.com/education/
Mine hardly notices when my 1 HP well pump or Air Compressor starts. Even less with the miter saw. It also starts a 4 TON AC Unit with only a minor dim of the lights (even when my other 2 ton unit is already running).
And so u run a 4 ton and 2 ton on it at the same time?
Yes, along with lights, fridge, freezer, T.V., etc.
I see in your diagram (thank you for sharing - its fantastic) that you are using 100 Amp breakers on your main 48v battery bank. I'm installing the same inverter you have - SPF6000T MPV, and I was going to fuse the main line from my battery bank with a 250 amp Class T fuse, according to the calculations I put together. The inverter manual doesn't speak to what kind of over-current protection to use and at what amperage, so I'm just coming up with my best guess. But 100 amps and 250 amps is a big difference. Can you please explain what led you to the 100 amps decision, especially since you have the exact same inverter? Thanks!
Sure thanks, even know I have 1000 ah of battery there will never be more than 80 amps from Inverter to Batteries and never more than 80 amps from Battery to Inverter, so the 100a breaker is short circuit/disconnect protection. My system is built as backup for power lose/catastophe to run essential appliances only, while it does save 45 to 50 a month off the electric bill it's primary use is backup, hope that makes sense, Joe.
You need a Breaker/Disconnect and also a charge resistor, the push button bypasses breaker with 25 ohm 100w resistor to charge inverter prior to flipping breaker on, also have a 100a breaker at the battery.@Joe BoyKey ... any chance you can snap a few pics of your inverter install and how you laid out the switchgear at the inverter?
I'm trying to decide if I need / want a breaker in between the battery bank and the inverter. Seems it would need to be at least 200 amps? But finding one seems to be a challenge. Midnite Solar has a DC 250amp, but not finding a suitable housing. I am actually considering just buying a Midnite E-Panel for the Conext SW and modifying to work with the Growatt 12kw. But $450ish
Also, curious, what size battery cable are you using to attach the 12kw to the battery bank? I'm thinking 4/0 (0000)
And what size AC wire are you using to make the connection from the 12kw to the load panel. I was thinking 6awg if it will fit under the screw terminals of the 12kw. I will be setting it up 240vac Split phase.
I put in the 6kw unit and it works like a champ! My well pump pulls almost 19 amps surge on startup and the heat pump water heater pulls 20 amps surge. No problem, it didn't blink.
The breaker is dc, it has printed on "use outside post for dc" also #8 is good for 55amps ac
Spf-6000T-dvm is .84a dc
