Recent content by nezjnr

Those cables leading to the pack never went under that shelf bracket and they had enough slack on them that if the shelf/bracket broke and it dropped they still would not have been out of length and pulling on the breaker. The breakers were for Positive and Negative. If the weight of the pack...

I will note, Pack 6 the bottom one had a completly destroyed BMS, I haven't got a really close look at it appears the front 2 cells Vented/Burned. Pack 10 Above it, the BMS is still atached and outwardly doesn't look damaged how ever that pack looks to have lost the front 4 Cells at least...

I think the fusing of the cable happend during the event and it was only the positive lead that fused on it. Even if they fused together the BMS was directly after the battery and before those cable so it would have cut out in the event. I've begun pulling it all apart thoughm probably going...

2P DC breakers were upto 200A, for 250A you had to size up to 3P. Packs maybe saw 70~80A briefly if the sun was really good, but most times they would run around 20-50A as the normal. Cables were 95mm so felt no heat at that load.

I explained just above but the breakers were actually turned off after everything happend, how ever I believe all the BMS had cut off anyway, possibly damaged by the fire fighters, over current spike, heat. All the stats I can see in home assistant show nominal Cell voltages in charge state...

I've never had any nuisance trips on the DC side of the system. My grid breaker to my Inverters would sometimes trip from overload due to being set to charge batteries but as they are also supplying load but lack any intelligence to scale back charge current sometimes there was too much draw...

These are the breakers on the Battery/Busbar/Inverters https://www.geya.net/product/gycm3-dc-molded-case-circuit-breaker/ 3P 250A, Negative and Positve they were between the bus bar and the battery pack. None of the breakers actually tripped, they were turned off after the everything was...

Yeah, thankfully it's just some money and time and a lot of stress. But wife is fine, cats are safe garage plater just needs a little bit of touching up and paint. Hopefully it helps someone.

These sit on a lip for support and were rated for the weight of the batteries...

Not really before pictures but from the other end. I'll have a look later for before pictures.

I bought a different model, but it was this model/design

Shunt and Monitor was one of these. https://a.aliexpress.com/_m0YM7ro I got the 300a shunts, highest current was only 60a

I just got power restored hoping my Home assistant caught the cell voltages and current flow at the time, wil add if I can get.

It's really hard to determine because the fire fighters sprayed and hosed it deforming a lot of the plastics and wood. But the shunt was on the negative, going to a breaker, it had no strain on it so the battery dropping wouldn't made the shunt snapped like that. I think it was poor design on...

Got a call Sunday from the wife about smoke coming from the garage and fire trucks were already on the way. After they had there fun spraying many cans all over the garage I got to have a look inside. I have 5 rows of shelves with 2 shelves for in each with a battery and then busbar along the...