It will stay a mistery as I'm not planning to make the same fire again.
For fires caused by wires:
Yes, possible.
Not the BMS wires. 1.5mm2 with thick insulation, no way.
The screws used had about 1mm spacing between the plastic cover and the bolt/screw.
There was a thin wire from temperature sensor, with an iron top.
I noticed in the past that extending the BMS spaghetti wires with cat6 leads isn't safe.
A tip from
@ghostwriter66 , I thought was a good one.
Turns oute they hve so thin insulation that it's not enough to prevent a short in high amperage environment.
Using thin wires as suggested isn't a solution here, it doesn't melt if it touches the MDF, it will start glowing, and might have been the start.
BMS wasn't connected yet.
For the people who want to start a discussion about this, yes, absolutely right it should not.
After 6 days of building the battery pack (total 80 cells) that is placing and connecting the Bus-bars to be able to get the 48(51.2) volts, dark at night, no airconditioning, you'll be happy to just have electricity.
It's hot season. +35c
Those high temperatures at night aren't good for sleeping.
The high temperatures during day time not the best also for working
6 days?
Yes.
Check, double check, tripple check.
Ask second person to look for errors after explaining what they might be.
(In this situation just not tightened nut and bare wires or end of wires)
I have a medical condition, chronic neuropathic pain after surgery, now 17 years ago.
When a doctor see my pile of pain meds the ask "how can you still be walking?". And they are genuinely amazed. Normally they see their patients in half coma with it.
Needless to say I haven't been working since.
The first few years I could not read Donald Duck comic, I forgot the first picture halfway.
A walk to the store (750m) and bring back light groceries was enough to nock me out for 3 days.
After 17 years I've learned to live/work with the energy limitations the pain give me, and the mental limitations the medicine give.
The meds mostly take away the pain, they don't give back the energy pain eats.
Ever had real tooth pain? The type that requires dentist to fix (or pull out yourself)
That's neuropathic pain.
And it's not always , but constant waves.
Like when you hit your finger with a hammer. Not the first sharp pain, but the pounding waves with sharp princes.
My whole lower right rib feels like that, like some one hit it with a baseball bat.
Always. Day and night.
Good news is that I can't damage it, only irritate, what gives more pain, that takes a week or so to reduce.
Sure.
I'm making mistakes.
Some might call them foolish, but they probably are fools themselves.
My wife isn't foolish, yet, she would sit on there without thought.
My meds make that I'm less sharp in seeing all the connections, all the variables. That makes me just human, no longer super human.
Silly, Yes. I was "Super human" with a large pile of certification from Microsoft (mcse), Novell (master cne) Oracle, Cisco, SAP, etc.
My job was to fix the problems the rest could not and flew all over Europe, ME and Africa.
Third line software support for really big Japanese company
Thrust me, you must have a lot of certification before Vodafone UK HQ let's you play with their servers.
That was difficult to accept.
Being almost brain dead
Also no more gym, u used to be there 5 days a week 90 minutes.
Again, hard to accept. The body build in 15 years see and feel getting weaker every day/week/month/year.
I'm still here!
And sure, I'll make mistakes.
Not mistakes others would not have made with less in-depth knowledge of the materials.
I do have it, sadly can't always combine to notice all variables.
Was it a dumb action to cover 24/36 threaded rods with a sheet of wood? No, it wasn't
Was it a dumb action to rest on that wood, apply like 40 kg or less?
No it wasn't. 1.5 kg on a terminal isn't a lot.
Was it a dumb action to have (slightly) different size of rods?
Again, no it wasn't.
Thailand is not USA.
Especially rural areas.
You are happy to find studs, even that they are 5mm different length and not stainless but carbon steel.
Stainless long threaded rods (e.g.50cm) can't be found to make yourself.
Galvanized iron, only 1/4 inch.
Not 6mm.
Is working with the materials that are available foolish? It isn't.
It does increase the chances of things going wrong.
That's for certain.
One of our forum members has a nice tag "some people ask "why" others ask "why not?"
I guess I'm part of the last group.
This got me from not being able to read the Donald Duck to building +200 1060 GPU mining farm, and now our house in Thailand.