[Reward FOR answers] 50TH S1 Farm

[zulover]

But trust me, better go for larger machines in smaller quantities...  

The long solid shelf you use make for a nice wind tunnel effect along with side by side for 10 or 12 miners.   those look like mdf so they won't allow heat to rise much


that setup could be improved using simple 20 inch box fans on the pull side venting much of the heat out of the building.

   obviously I am trying to get the op to avoid/lower ac cost as much as possible.

you have close to 40 in that setup the op would need 5 to 7  racks like that.  his biggest problem with your setup is access to the gear. but with 200 plus s-'1 anything other then a line of lunch tables makes the same problem.

 btw  if he gets some 1th machines it is less work.

I have an 22000 air m3/h industrial fan in the wall at the back of the shelf to suck out the warm air.

I've made the height of the shelf small because I didn't had more space. The new shelf is higher, have more space at the top of the miners, but no space between them because the cooling is better this way.

I have an other shelf but it's not shown at the picture.

I'll try to make a paint but don't laugh hard. 



Had had to do this way because of the spec of the room.

If I'll able to make a new room, and If i were op i'd do this. (I'll sure do it when I arrive that point to make a new room.)



You still have enough room to check the miners.

But I'll definitely go for 1 th or bigger machines.

Im working on a similar setup up to 30 ants and intending on getting more machines, 1ths or others, but ventilation iis a BIG issue!
so what size fan is it that you use to get 22000m3/h? and what do you have for cold air coming in and how cool does it stay.

in the second what is the tube section supposed to be?

thanks

[1715144121]

1715144121

[1715144121]

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[sidehack]

Regarding the Dell 750W PSU, I've had three load-balanced running five overclocked S1 for a couple months with zero issues. It's not recommended but some folks have had a single PSU pushing two overclocked S1 for a while as well; it takes the supply to 100% but they're built like tanks. If you're considering going that way let me know and we can work out a bulk rate on boards and PSU. One nice thing about using the server supply and swappable interface board is if the PSU craps out, it's about a $10 replacement that takes all of ten seconds to pull and plug, no worrying about rerunning cables and paperclips and stuff.

[smracer]

I built these. (DPS-2000BB)  You are going to need more than 400amps.  You also need power for exhaust fans and/or cooling.

How tall is the ceiling?  Can you cut a hole in the roof for an exhaust fan?

Find an electrician off craigslist that works for cash so you don't have to pull permits.

It cost me around $4000 to put in 600amps of 220V.  I already had a 2000amp main breaker so it was easier to pull off the main lines.

[bobsag3]

I built these. (DPS-2000BB)  You are going to need more than 400amps.  You also need power for exhaust fans and/or cooling.

How tall is the ceiling?  Can you cut a hole in the roof for an exhaust fan?

Find an electrician off craigslist that works for cash so you don't have to pull permits.

It cost me around $4000 to put in 600amps of 220V.  I already had a 2000amp main breaker so it was easier to pull off the main lines.

Then, when the power company or the city or the land lord comes around, you can get screwed by not having the permits. Seriously, I dont know why you would go around the permits, they exist for a reason and going around them can get your ass lit up here in the US.

[solarion]

Then, when the power company or the city or the land lord comes around, you can get screwed by not having the permits. Seriously, I dont know why you would go around the permits, they exist for a reason and going around them can get your ass lit up here in the US.

There are many reasons to circumvent bs government regulations(money grabs). In many cities here in the US you're not allowed to change your own broken water heater in your own home without a permit. Land of the free indeed.

[bobsag3]

Then, when the power company or the city or the land lord comes around, you can get screwed by not having the permits. Seriously, I dont know why you would go around the permits, they exist for a reason and going around them can get your ass lit up here in the US.

There are many reasons to circumvent bs government regulations(money grabs). In many cities here in the US you're not allowed to change your own broken water heater in your own home without a permit. Land of the free indeed.

And when the power company comes by, wonders why your pulling 3x the load your permits say you can and they cut your power, you can complain about government regulations.

[solarion]

Then, when the power company or the city or the land lord comes around, you can get screwed by not having the permits. Seriously, I dont know why you would go around the permits, they exist for a reason and going around them can get your ass lit up here in the US.

There are many reasons to circumvent bs government regulations(money grabs). In many cities here in the US you're not allowed to change your own broken water heater in your own home without a permit. Land of the free indeed.

And when the power company comes by, wonders why your pulling 3x the load your permits say you can and they cut your power, you can complain about government regulations.

For myself, I don't care what goobermint does, but this whole line of conversation is off topic. I simply said there are many reasons to circumvent tyranny regulations.

[kendog77]

If the building burns down due to shoddy electrical work and no permits, I guarantee insurance will not cover it and smracer will be financially liable.

Also, going from drawing 200 Amps to drawing 600 Amps without checking with the power company first sounds pretty dangerous. I know when I looked into upgrading my service from 200 Amps to 400 Amps, the cost was very high because the power lines coming into my house could not support a 400 Amp load so the power company would need to run new wires.

[Somekindabitcoin]

Buy Spondoolies-Tech boards either the 1st gen or Rockerbox and let them hash away in immersion cooling. Their Rockerbox boards give around 3 TH/S per board. You can buy 60,000 worth of those boards and stuff them in the 2-Phase immersion cooling. Electricity won't be a problem for that. It's the most efficient way to cut down on your costs. (http://www.allied-control.com/immersion-cooling) This will be a good project if you go this way.

[smracer]

If the building burns down due to shoddy electrical work and no permits, I guarantee insurance will not cover it and smracer will be financially liable.

Also, going from drawing 200 Amps to drawing 600 Amps without checking with the power company first sounds pretty dangerous. I know when I looked into upgrading my service from 200 Amps to 400 Amps, the cost was very high because the power lines coming into my house could not support a 400 Amp load so the power company would need to run new wires.

The work was done by a licensed electrician just not on the clock.  It is completely up to code.

I have a 2000 amp panel.  All he did was run 3 X 200 amp GE boxes.   They are not that hard to hook up.  I just wanted a professional to do it.

I own the building.  I am not worried about the warehouse burning up.

It used to be a metal shop and the electric bill averaged $8,000 a month when I bought the place.

[philipma1957]

I see 2 panels with 8 breakout wires each.

 so a 200 amp panel divide by 8 = 25amps a wire.


the white box says 230 volts…  So what do you have in  each of the gray boxes 230 volts at 200 amps?


if you do and each breakout is on a 25 amp breaker what gauge is that wire.  12 or 10?  I hope not 14. 

As those breakout wires look like 12 gauge to me.

[psjw4450]

Not to go off topic but is it possible to even ROI once you factor in the cost of the work, electrical costs, and cost of the miners or is this an expensive hobby for people with a lot of coins and money. 

[smracer]

I see 2 panels with 8 breakout wires each.

 so a 200 amp panel divide by 8 = 25amps a wire.


the white box says 230 volts…  So what do you have in  each of the gray boxes 230 volts at 200 amps?


if you do and each breakout is on a 25 amp breaker what gauge is that wire.  12 or 10?  I hope not 14. 

As those breakout wires look like 12 gauge to me.

The other panel is on the other side out of shot.   The 230V box was for a screw air compressor that is no longer in service.  I used the 2 X 120V lines to make 220V for one of the 200amp boxes.  The 208V stinger is not being used.  I had the whips made - They are 10 gauge.

[philipma1957]

I see 2 panels with 8 breakout wires each.

 so a 200 amp panel divide by 8 = 25amps a wire.


the white box says 230 volts…  So what do you have in  each of the gray boxes 230 volts at 200 amps?


if you do and each breakout is on a 25 amp breaker what gauge is that wire.  12 or 10?  I hope not 14. 

As those breakout wires look like 12 gauge to me.

The other panel is on the other side out of shot.   The 230V box was for a screw air compressor that is no longer in service.  I used the 2 X 120V lines to make 220V for one of the 200amp boxes.  The 208V stinger is not being used.  I had the whips made - They are 10 gauge.

 you are fine with 10 gauge.  no worries with overheating the breakout wires.


to psjw4450

 the wirework he did will last 20 years.  so roi becomes different.  Also remember tax laws vary and this is a longterm capital improvement.

his warehouse may use s-1's for a while and he may decide to be a hosting service.   The s-1's  would be a way to learn how to do a hosting service. So s-1 roi is meh  but gets written off a bit as an expense. 

If I recall he has 7.5 cents  a k-watt for power.  he may be a great hoster in 3 to 6 months time.  lets say oct 1st.  he can ramp up to many units and host them.

 I would love to have 5 or 6 sp10's running at 7.5 cents a k-watt. or better yet run 2 sp30's at 7.5 cents a kwatt.

[klondike_bar]

^  +1

electrical work and long-term installations will outlast a single generation of bitcoin equipment.