RV application. Currently I have a 280ah 12v battery and 120a Overkill bms, as well as a WFCO "power center" that distributes AC and DC power, along with breakers. I want to be able to grow the system in the future, so I'm planning to buy a 3000 watt inverter, and later build another 12v 280ah battery with another 120a Overkill bms.
My questions surround fuses for my situation now and where I intend the system to go. Each Overkill has a max amp cut-off of 130 amps, and so I won't expect to draw more than around 1200 watts per battery. Part of my confusion lies in that the power draw is across both the inverter and the WFCO 12v power distribution. The WFCO can supply around 900 watts from 12v DC (for the 12v appliances and lights).
Do I connect each battery positive and BMS negative to a separate fuse? Here's a terrible diagram of that:
Or can (or should) I join each respective battery positive and BMS negative to respective fuses? A terrible diagram of that example is below:
Do either of these even properly wire these batteries in parallel? The RV's wiring already has leads to go to the battery for 12v power, which run through busbars and the power center. Do I even need to add fuses then, since I presume the wiring has already set something up adequately?
I suppose I'm not exactly sure the best way to parallel the BMSes, and so I might have done that wrong. I'd also love to add solar with an MPPT controller, which further complicates my understanding of how the wires and fuses hook up.
I'd appreciate any guidance here.
My questions surround fuses for my situation now and where I intend the system to go. Each Overkill has a max amp cut-off of 130 amps, and so I won't expect to draw more than around 1200 watts per battery. Part of my confusion lies in that the power draw is across both the inverter and the WFCO 12v power distribution. The WFCO can supply around 900 watts from 12v DC (for the 12v appliances and lights).
Do I connect each battery positive and BMS negative to a separate fuse? Here's a terrible diagram of that:
Or can (or should) I join each respective battery positive and BMS negative to respective fuses? A terrible diagram of that example is below:
Do either of these even properly wire these batteries in parallel? The RV's wiring already has leads to go to the battery for 12v power, which run through busbars and the power center. Do I even need to add fuses then, since I presume the wiring has already set something up adequately?
I suppose I'm not exactly sure the best way to parallel the BMSes, and so I might have done that wrong. I'd also love to add solar with an MPPT controller, which further complicates my understanding of how the wires and fuses hook up.
I'd appreciate any guidance here.