ericfx1984
Solar Enthusiast
- Joined
- Oct 10, 2021
- Messages
- 765
I'm getting ready to start planning my build with 4, MPP solar lv6048's
These are 48 volt, 6500 watts
So I figured each unit will pull up to 160 amps
6500w ÷ 0.85 = 7647w
7647w ÷ 48v = 159 amps
So we could call that 160 amps per unit... I think this is a conservative rating as the unit is probably much more efficient than 85% DC to AC conversion rate
So the problem becomes how do I make the transition from 2, 16s lifepo4 batteries (eve cells 280ah and eve cells 304ah....)
Note: I eventually plan to add one, possibly two more 16S batteries probably 280 amp hour
I figure one way I could do it is run either a pair of 1/0 or a single 4/0 cable off each battery (and then copy the same thing on the negative side obviously)
From there I could run that to a busbar
But then how thick and wide would the bus bar need to be to support this? I mean that's about 650 amps?
Then I figure I could come off of the bus bar to four, class T fuses, probably 200 amp each one leading to an equal length 1/0 gauge wire, which goes to the various inverters
I imagine I would want to put a shut off somewhere... I would probably install a shut off switch at each battery? I would probably use blue sea
These are 48 volt, 6500 watts
So I figured each unit will pull up to 160 amps
6500w ÷ 0.85 = 7647w
7647w ÷ 48v = 159 amps
So we could call that 160 amps per unit... I think this is a conservative rating as the unit is probably much more efficient than 85% DC to AC conversion rate
So the problem becomes how do I make the transition from 2, 16s lifepo4 batteries (eve cells 280ah and eve cells 304ah....)
Note: I eventually plan to add one, possibly two more 16S batteries probably 280 amp hour
I figure one way I could do it is run either a pair of 1/0 or a single 4/0 cable off each battery (and then copy the same thing on the negative side obviously)
From there I could run that to a busbar
But then how thick and wide would the bus bar need to be to support this? I mean that's about 650 amps?
Then I figure I could come off of the bus bar to four, class T fuses, probably 200 amp each one leading to an equal length 1/0 gauge wire, which goes to the various inverters
I imagine I would want to put a shut off somewhere... I would probably install a shut off switch at each battery? I would probably use blue sea