Antminer S9 - How to power in Canada?

[sidehack]

I would guess they keep hashing on whatever work was passed in last and then fall idle whenever that runs out. But they're doing it with no fans, and whatever power draw they pull at idle, all that heat would still be inside the box. Sounds like Tupsu has been on the receiving end of a problem like that with destructive results.

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[spazzdla]

This is why spazz is hoping for a 100-400 watt (preff closer to 100w) 16nm ASIC :S .

 I am still considering an S9 but all the PS I have for my S3's won't cut it as they were cheaper PS and have two separate rails for DC... I have a feeling those DC buses won't play nice together :S.

(From Canada like the OP)

[sidehack]

Unlikely that any given rail is at least 400W? That's what you'd need for a single board to avoid stuff exploding.

Yep, sub-500W miner would be nice.

[spazzdla]

Unlikely that any given rail is at least 400W? That's what you'd need for a single board to avoid stuff exploding.

Yep, sub-500W miner would be nice.

Alas each rail is like 250 W.. .. Might be 300 actually but all way to weak .

I had to re-wire the power supplies to work with my S3 actually.  Well.. by re-wire I mean just rip off the two 4 pin connectors for the CPU and connect them to a 6 pin.  The PS kept dying when I first ran the unit, after some googling I found out I had to power each board with one of the 12VDC busses as one couldn't handle it..

Looks like I should of just gone with a beastly PS unit.. oh well. I will just continue to mine with my "New-rbox" and a few of your sticks lol.



I am considering buying up some land in Manitoba to mine though.. cheap power for businesses and cheap power in general.  That or Quebec as I would probably need to learn to fly and buy a plane to make Manitoba viable.

[adaseb]

Sidehack,

Can't you  just plug the other fan directly into the other PSU? So if the controller shuts off the other fan will still be spinning?

[sidehack]

Probably. You might have to pigtail the tach line back to the fan connector on the controller; I don't know how they behave with only one fan reporting speed.

[pixel375]

Unlikely that any given rail is at least 400W? That's what you'd need for a single board to avoid stuff exploding.

Yep, sub-500W miner would be nice.

Alas each rail is like 250 W.. .. Might be 300 actually but all way to weak .

I had to re-wire the power supplies to work with my S3 actually.  Well.. by re-wire I mean just rip off the two 4 pin connectors for the CPU and connect them to a 6 pin.  The PS kept dying when I first ran the unit, after some googling I found out I had to power each board with one of the 12VDC busses as one couldn't handle it..

Looks like I should of just gone with a beastly PS unit.. oh well. I will just continue to mine with my "New-rbox" and a few of your sticks lol.



I am considering buying up some land in Manitoba to mine though.. cheap power for businesses and cheap power in general.  That or Quebec as I would probably need to learn to fly and buy a plane to make Manitoba viable.

Lol, electricity down here in Manitoba where I live is $0.07/kwh. It's really nice

[spazzdla]

I have been highly considering buying land in Manitoba...

[pixel375]

I have been highly considering buying land in Manitoba...

Land is very cheap to buy... Only the property taxes are high.

[pixel375]

I have 3 acres of land guys!
Power cost is about $0.07/kwh
If someone wants to rent some of my land I got plenty

[generalt]

So if you are running two 750w PSU together (I don't know the proper term) for one miner.  What happens when one of the power supplies fails for whatever reason?  Say that circuit trip, one psu blew, some idiot tripped over the plug, etc. would the other PSU safely shutdown?

[philipma1957]

So if you are running two 750w PSU together (I don't know the proper term) for one miner.  What happens when one of the power supplies fails for whatever reason?  Say that circuit trip, one psu blew, some idiot tripped over the plug, etc. would the other PSU safely shutdown?

if linked in parallel and one dies  the other would shut down do to overloading.

[pixel375]

So if you are running two 750w PSU together (I don't know the proper term) for one miner.  What happens when one of the power supplies fails for whatever reason?  Say that circuit trip, one psu blew, some idiot tripped over the plug, etc. would the other PSU safely shutdown?

Bad things can happen. Better get one proper power supply that can handle the miner by itself.

[sidehack]

If it's two server PSUs load-balanced, its as good as a single-rail PSU. When one goes down, the other will too. I've been running miners like that for two and a half years.

[talks_cheep]

When the controller is shut off the other blades still keep hashing?

Yes the blades will try to finish their currently hashing jobs, so here's the trouble, when you cut off power to the controller, the fan stops running but the blades are still hashing for at least a short while longer. Temp gets out of control, since the fans are no longer running, poof out comes the magic smoke.

[xhomerx10]

So the new, amazing Antminer S9 just came out... And I really want to buy it!
But the S9 needs to be powered at 1375W, and with 9 PCI-e connectors (3/board).
The recommended power supply is the APW3.
The APW3 needs over 220V to run, but I live in Canada, and in Canada there is only 110V outlets.
Currently I'm running 2 S5 antminers on one EVGA SuperNOVA 1300 G2, which has just the right number of connectors, which is 8.
So now I'm either looking for a PSU that can do 1600W and has 9 PCI-e connectors and hope it will be enough,
could use 2 PSUs to power one miner,
or get a 110V -> 220V transformer and hope it doesn't blow any boards or circuits.

Please help me out you wonderful people

 You probably have a couple of 20A breakers in your kitchen on split plugs for your toaster over/coffee maker/microwave.  That would give you more than enough power for the S9 @ 120V
Careful with your other outlets though.  They are ganged so you could easily pop the normal 15A circuit breaker.  I did that a couple of years ago turning on my Christmas tree lights - even though the outlet was far away from where my miners were plugged in, they were on the same circuit.  If you do nothing else, make a diagram of which outlets are serviced by which breaker.

[Erumara]

Thought I may chime in, mining in Alberta myself. Just about finished my mining box with space/power for 8 miners, working on some new pics of my finished intake/exhaust.

Here is 240v power for the miners, each unit pulls on a 15a double throw going to a simplex 240v plug.






If you're having a electrician help you out those simplex to 5-15 adapters are a bit pricey, but actually meet code in Canada, as you cannot wire up a 5-15 wall plug with 240v and have it pass an inspection.

I highly recommend the eVGA 1600w, they will power any GPU or ASIC rig flawlessly and with better efficiency than Bitmain's PSU.
I had one of these eVGA's spontaneously stop working, it was inconvenient but I got a new one from newegg in 3 days. 2 weeks later after spending $40 to ship the dead unit back to eVGA in California, I got a brand new sealed unit with a full 10yr warranty and altogether I'm extremely happy.

The best part is I have the spare PSU just itching to power an S9, just waiting for the price to drop a little bit more.....

[xhomerx10]

Wow!  Nice setup.

[Erumara]

You're too kind

Figured I would snap a couple pics of my nearly completed ventilation.

To be added: 2 more 8" fans to bring airflow to 1500cfm, the necessary two 8" ducts on the left side of the box.






Hand-made 10"x14" filtered intake, and 10"x10" hooded exhaust.





*Ignore the timestamp, this old camera constantly dies*

[Mr.Beegood]

You have gotten alot of good info already  but I will tell you what I did anyways. When I got my 3 s7's I had the same issue. I needed each of them to have 220v and 16 amps. I ran a 6 Guage 3 wire cable from my main breaker panel pushing 220v to a new subpanel that I installed just for the miners then I got 3 20 amp 2 pole breakers and some 220v outlets from home Depot and installed 3 20 amp 220v circuits, one for each miner. I then had to get some heavy server power cords and splice new ends on them to fit the 220v outlets that I bought. I know there are alot of ways to avoid having to do this but it seems to me that each miner should have its own 20 amp circuit with the appropriate sized wires to avoid heating up breaker panels and wires. I read about pdu's and it seems to me like trying to put too many eggs in a carton. If you are interested I can upload pics of my setup.