Topic: Trying to avoid cheap farm build (Read 223 times)

Yes because as crypto rises and rises to new highs, mining will always be giving less and less and is going to be a point where crypto will not rise anymore and then mining will be dead. That time is not far away, crypto still have some bull and bear cycles yet.

Yes you are right metroid but I was not in good shape in 2013 to even think about building mining rigs, I have no funds or stable income at that time, anyways maybe in 2026 new miners like us today will be told the same thing you saying right now

The interesting thing is while people think miners are earning a lot of money mining today, truth is miners used to earn a lot lot more money in 2013 ehhe

2013:

miner: i need this setup
electrician: (fucking idiot nerds, well...as long as i get paid) yes sir!

2021:

miner: i need this setup
electrician: you must be making a bank out of this sir!

Yeah, call an expert for the big things and then make sure to learn simple things, you will need the expertise if something goes wrong, calling an electrician every problem that happens will cost a lot of money.

It's probably best to let the electrician do the design as well. Just give them requirements and they can figure out the best
way to do it.

Also check your local laws. Some jurisdictions require electricians to do all the work for anything that will be connected to the grid,
others just need an inspection before connecting.

we have multiple locations

a 400 amp 3 phase with 12 x 30 amp  breakers

each one is wired to those 24/30 hp pdus I linked to.

so this means 1 big ass 400 amp breaker

feeds to 12 30 amp breakers

they feed to the pdus

the pdus have a master 24 amp breaker

and four c19 receptacles that each have a 15 amp breaker.

so a bad rig should trip its psu. say that fails it should trip the 15 amp breaker on the pdu say that fails the 24 amp breaker on the pdu should trip
say that fails the 30 amp breaker in the main panel should trip
say that fails the 400 amp breaker in the mail panel should trip

if all that fails the transformer will likely fail and big money is lost.

but we have five breakers in series protecting the main transformer.

Don't even think about it, the only wiring I've ever done is putting my graphic cards and motherboards together or doing a paper clip between two power supplies for a motherboard, anything other than this I'm hiring someone lol, while I decided to build a solar farm I got all the equipments myself and hired a pro to install for me, do the same and be free of dangers

(i'm gonna scare this scared y cats   )

yeah the guy that got arc'd.. if you really think about it, it was the panel box and all those breakers that put a man in front of that box to do some "wiring" probably to add more load.
     - (not safe) because some people subconsciously will not shut down the breakers with load (because computers are mining = money$$), amps and voltage formed the arc.

how about we remove the panel box and those breakers? and only use 1 small box for 1 main breaker 125A

AWG 2 is rated at 115A

5 x thhn AWG 12 spliced to AWG 2 inside a metal box, it is rubber taped and electrical taped over.

 - the line's are already maxed out, so, you'll no longer be "wiring" for additional load (safer)

 - if you got an outlet burned, you are have no choice but to switch off the main breaker

16A x 5, is 80A = ~ 17,600watts

so.. who will do the job of the breakers?

- 15A outlet x 2 per outlet box (30A max), you'll burn the outlet even before you burn those THHN AWG 12.

- common heavy duty 2500w extension cords have an overload trip, continuous load will ruin it at 2000W that's why you have to use it at 1600-1800w only.

now..2500w / 190v = 13.15A will not overload the 15A outlets because, extension cords will trip or burn first before those 15A outlet where it is plugged.

1600-1800w is (two rigs or one rig with two PSU) with 3080s or 3080ti's or 3090's.

You are right, any small mistake can lead to very bad injury or death I don't understand why people do this on their own when they aren't professionals, building miners is different from playing with high wattage electricity, it's a very wrong idea

This, incredible advice post, good math, numbers are spot on, to add, make sure you have a good earth line, the least resistance to earth, the better the line will be and lastly, do not forget the exhaust fan.

I strongly agree that this is enough power that is best when you hire a professional to do it.Such big mining farm financially speaking can allow the hiring of a professional to do the installations for you,remember life is worth much more than any mining rig or any amount of money,is priceless.

Don't do a shit yourself, this is enough to get someone killed, remember the guy that burnt himself trying to do wiring himself? That's a big lesson mate it's safer to hire a qualified electrician to do the wiring for you.

you need to have your own service transformer - talk to your power company, 75kva transformer (single phase) closer to a 200A rating compared to 45-50kva (very close to 100A)

an AWG 1/0 (aluminum) service drop wire.

an AWG 2 (copper) thhn main line.

a 100A mains breaker or probably a 125A (if 100A is getting slowly cooked).

20A breaker (use 25A or 30A if breaker is being slowly cooked) per outlet THHN AWG 12

outlet standard 15A (use two outlet per line-same outlet box)

two 1500w (off the wall rating) rig is around 8A if voltage drop to 190V. 8A per outlet is 16A, yeah 20A breaker is gonna get cooked, use 25-30A breaker.

over the shelf heavy duty extension cords (pretty common) that is rated 2500W will be loaded with 1500w up to 1800w(of the wall rating).

1200w-1500w power supply at 50% is most efficient that's 600w-750w off the wall, so a two PSU rig or two rigs will do the 1500w - 1800w per outlet.


the rest are GPU topic and cooling topic.



I'll go with 5 30A breakers 

4x 16A x 220v  = 14,080 watts
5x 16A x 220v  =  17,600 watts

17,600W / 190v = 92.6A
130A-135A main and service wire rating at 80% is 104A

Well 16 kwatts means you need 20kwatts since you must derate at 80 %

basically  you would want  30 amp 220/240 volt circuits.

four of them would be enough .


You want 4 pdu's such as these.


https://www.ebay.com/itm/153694273542?

this are pre derated to 24 amps which is 24/30 = 80% of the 30 am circuit.

four them would allow about 5280 watts x 4 =

21,120 watts.

big ones

What is the best wiring for a 16000 watt mining farm? Anyone have idea about this? What is the best solution/tools to build such electricity build? I'm trying to avoid burns and fire 🔥🔥 kind