Ok so I watched a bunch of will’s videos and I’m basically trying to mimick what he did with his setup for mine. (See pic1 ). So I have 2 5K growatt inverters and a EG4 battery rack with 2 xEG4 100ah 48v batteries. It’s a 48v system with 20 x 460w panels. I am building the inverter wall now based on how I saw Will build his. I am missing one more PV disconnect switch in the pic it’s on the way. So I will have one for each inverter so I can have my strings to each inverter with the ability to turn off each array. I plan on adding 4 more 100 ah EG4 batteries to the battery rack once I can afford them 1-3 months.
Now for my questions.
I added busbars like Will did but I honestly have no clue what their purpose is? I added 2 150A fuse blocks on both positive battery cables, that was the biggest fuse I could find. Is that big enough? I will have 2awg battery cable from the battery rack to the bus bar but from the bus bar to the fuse and fuse to inverter is it ok to drop to 4awg? Keep in mind I will eventually have 6 batteries. I plan on doing batteries in parallel. The only reason for the drop in wire size is I can’t seem to source the cable locally. Signature solar sent me 2 awg with the rack and batteries but I needed a bit more and 4awg was the best I could find. Total cable length from batteries to the inverter is no more than 6-7 ft. Do you see any major mistakes? Second pic is what I am trying to copy with Wills system.
List of parts
Thank you
Now for my questions.
I added busbars like Will did but I honestly have no clue what their purpose is? I added 2 150A fuse blocks on both positive battery cables, that was the biggest fuse I could find. Is that big enough? I will have 2awg battery cable from the battery rack to the bus bar but from the bus bar to the fuse and fuse to inverter is it ok to drop to 4awg? Keep in mind I will eventually have 6 batteries. I plan on doing batteries in parallel. The only reason for the drop in wire size is I can’t seem to source the cable locally. Signature solar sent me 2 awg with the rack and batteries but I needed a bit more and 4awg was the best I could find. Total cable length from batteries to the inverter is no more than 6-7 ft. Do you see any major mistakes? Second pic is what I am trying to copy with Wills system.
List of parts
EG4 LifePower4 Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A
EG4 (48V/100AH) LifePower4 Battery EG4 Lithium battery 51.2V (48V) 5.12kWh with 100AH internal BMS. Made of UL Listed Battery Cells. Off Grid Solar Batteries - Off Grid System - Solar Batteries for Home - Lithium Solar Batteries - Deep Cycle Solar Batteries - Power Reserve - Solar Panels Plus...
signaturesolar.com
Growatt 5kW Stackable Off-Grid Inverter | SPF 5000 ES-US (PRE-ORDER)
Signature Solar provides solar components and full kits for off-grid, grid-tie and custom diy solar systems. Providing Solar 101 and hands on experience within the solar industry. Quality inverters, bifacial solar panels, complete solar kits, solar batteries. Holding best in class brands such as...
signaturesolar.com
Thank you