Hopefully this makes sense as it moves from my head onto the keyboard……
context: diy solar generator 48v 100Ah battery, and Victron multiplus w/35A charger.
looking to panel this thing. No power audit, I’ll connect it to the array.If No sun, then I fire up the generator to the multiplus.
first off, Ive been playing with the Victron mppt calculator. I’m using my own panels but I don’t know what to use to input the v temp, and I temp?
here’s the data sheet of a panel I can buy locally:
Can someone tell me if it has the correct information, and what it is?
as for the CC and panel selection what are “best practices”?
do I match up the CC to the multipluss? (I.e 150/35 to match the multi 35A charge current) if so, do I play around with panels so I get close to 100% pv power ratio? how do I decide the series/parallel issue? It’s about a 50’ run of cable. I know higher voltage = smaller cables, less loss (with less amps)
as for connecting the panels, and assuming breakers to the battery, CC, and inverter are off can the panels be connected, and unconnected safely? I know panels generate electricity but if there’s no load do you still cover them with a blanket?
I can unplug things in my house without turning power off, but dc can arc.
I’m looking to buy 4 of the panels that I linked. The Victron calculator said I’d have about 30ish amps with a 2s2p configuration.
If I wanted a 4s I’d need a bigger controller
context: diy solar generator 48v 100Ah battery, and Victron multiplus w/35A charger.
looking to panel this thing. No power audit, I’ll connect it to the array.If No sun, then I fire up the generator to the multiplus.
first off, Ive been playing with the Victron mppt calculator. I’m using my own panels but I don’t know what to use to input the v temp, and I temp?
here’s the data sheet of a panel I can buy locally:
Can someone tell me if it has the correct information, and what it is?
as for the CC and panel selection what are “best practices”?
do I match up the CC to the multipluss? (I.e 150/35 to match the multi 35A charge current) if so, do I play around with panels so I get close to 100% pv power ratio? how do I decide the series/parallel issue? It’s about a 50’ run of cable. I know higher voltage = smaller cables, less loss (with less amps)
as for connecting the panels, and assuming breakers to the battery, CC, and inverter are off can the panels be connected, and unconnected safely? I know panels generate electricity but if there’s no load do you still cover them with a blanket?
I can unplug things in my house without turning power off, but dc can arc.
I’m looking to buy 4 of the panels that I linked. The Victron calculator said I’d have about 30ish amps with a 2s2p configuration.
If I wanted a 4s I’d need a bigger controller
Last edited: