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125 amps @ 48-54 vdc. Both pos and neg will be double cable. 3/0 & 2/0 cables will be stripped, and joined together in one 250 MCM tinned copper crimp lug, at a length of 45 feet. That should easily carry that current with minimal voltage drop. (I hope)

What's your opinion on a 48v, 45 foot battery cable run using one 3/0 and one 2/0 cable together to carry the extra current/heat? I have 100 feet of each, so I could double up...

I have my growatt 5000es setup like you describe. Check out my diagram I posted. I am trying to get it verified, so use at your own risk. Any questions on inverter settings, let me know. I can send you what mine is set to, and what settings do.

I want best of both worlds, solar power but grid power if needed. I wired this up myself, and need to know if it is safe. Please assume all wire diameter, fuses, circuit breakers are all up to, or above spec. From what I can gather, 2 Neutral bonds are acceptable as long as they are separate...

Each imverter has its own circuit breaker, as I posted above, just concerned about wiring safety. "Assume all circuit breakers, cable sizes, fuses, are all at, or above spec. I'm just concerned on the ac wiring, and the ability to safely trip GFCI circuits, not catch fire, etc."

Everything is setup in hall closet already. Its an 1100 sq foot house, so not much room. With my max loads, I will barely see 1 volt drop in 50 feet. It will prob be closer to 40 feet, but should be fine. I have full control over min, max votages in my Growatt 5000es inverters. I can easily...

Alright, you convinced me. I found a spot about 6 feet away from house in backyard. The battery cable run will be about 50 feet. I found a decent 7x3 metal galvanized shed to house them in. I will still still make the shed fire resistant, with a standard fire sprinkler, and a fine mist fire...

Since you posted this, and I went and looked at a couple forum members fires, I have re-thought my battery storage. I am planning on converting a closet into as fire resistant room as I can. I am going to layer the whole room with 3 layers of 5/8" type c gypsum (1 hour and 45 minutes fire rating...

I have them in metal battery boxes, in a closet that I lined with cement fire board. I installed a smoke detector in the closet also. All fuses, wires, etc are rated at or above required specs. I will get pics up soon, I'm trying to get my 2nd battery finished, last 2 strings of panels, and my...

It is a "grid use only" system. Fully self sufficient, but I have grid power if need be.

Sorry, I am in the city of Santa Clara, about 30 minutes from Santa Cruz (the coast). NOT a good experience from Bigbattery! $8600 for 2 of their KONG batteries. 1 obviously had a BMS problem, the other has a bad #13 cell. This is right out of the box! Of course I have to pay to ship both 400...

Hi, first solar forum registration. I finally purchased about $20K in solar equipment. Didn't like ANY of the offers from installers, or the type of systems, so I designed, and built my own! I am using 3 GROWATT 5KW Off Grid Inverters, 2 Solar Edge 5KW Midpoint Transformers, 2 WATTS247 PV...