Thanks! So instead of the two - 200A class T fuses, I would just need one fuse. Since it's in line on the 4/0 cable right off the battery bank would it need to be higher amperage then?fuse should go between batteries and the switch. First disconnect after meter should be bonded.
I don't see communication in this, but assuming that's implied.
Thanks for mathing. I apparently need sleep and forgot to double the load.cable sizes all check out.
two 6548's = 13,000W
at 48 volts you could draw up to 270A from the ESS,
I would put a 300 or 350 A Class T fuse between the ESS and the DC disconnect.
I would put a 500A Victron Shunt between the ESS and the small bus Negative,
I would put Solar Assistant between the two inverters and connect all comms to SA.
Would that be total between the two inverters? I wasn't sure if that 153 stacks and becomes 306 from both of them drawing for split phase.Looking over the manual, they should communicate with the batteries as well. So the sync cable and battery comms.
153 amp is the expected draw according to the manual as well, so 200a fuse is likely fine. 4/0 is likely overkill, but leaves you room to add more inverter without rewiring. Just have to change the fuse.
That is why we double check each other, best to get a second opinion rather than a problem later.Thanks for mathing. I apparently need sleep and forgot to double the load.
Each inverter will draw up to 6500/48 = 135A from the ESS (battery bank) but they add since both tie into the small bus pos and neg.Would that be total between the two inverters? I wasn't sure if that 153 stacks and becomes 306 from both of them drawing for split phase.
Thanks, here's the updated diagram with those edits if I understood correctly. What about the bonding of neutral/ground on the transfer switch?Each inverter will draw up to 6500/48 = 135A from the ESS (battery bank) but they add since both tie into the small bus pos and neg.
The cable from the battery bank to the bus may carry double ie 270A (maybe a bit more if the inverters can take some over load to start up a motor or some other big inductive load)
A fuse on the main battery cable should be capable of 300A, a 350A may be a better choice. Put the fuse As Close As Possible to the battery end.
After the small bus, you could put a 200A class T to each inverter. not really necessary, but adds some protection in case of something bad happens.
My install is slowly coming along bit by bit. I was re-reading some posts and had a question on the Solar Assistant. Do you know if it works for split phase like I'm doing with two inverter, or only if the inverters are in parallel?And Solar Assistant set between the two MPP 6548's - trust me you will be glad you have Solar Assistant to monitor the system, and make changes from your phone or a lap-top.
if you are making split phase 120/240 with the MPP 6548's then those MPP's need to have comms between them, each unit will connect with a USB to the Solar Assitant and report loads etc. I added a couple of expansion hubs to allow my solar assistant to have 8 USB inputs. It all works great.
How are your batteries mounted? In the Eg4 rack? How long are your cable runs?