Topic: How do you power an Antminer S9 in USA / Canada with 110v? (Read 43972 times)

As long as you are on a proper rated circuit and not overloading it; and you config your TPLink AP to be a wireless bridge, you should be fine.... im pretty sure that's what you were mentioning.

When you are first running it;  pay attention to the power cable for the PSU, and the PCIE cables going to the miner.  They should not warm up AT ALL.  If they are;  you are doing it wrong;  either overloading the PSU, or the circuit.

Most kill-a-watt meters have a built in voltage sense at the plug, so its also a good thing to note voltage while on and off;  If the voltage is on the low side to begin with;  Be cautious and do research on that subject on how the line voltage effects the operation of voltage transformers and their wiring requirements in electronic devices.

How can low Wall outlet voltage be bad?

S9s are not wireless, you need a DHCP enabled Ethernet cable plugged into them.   Power wise, they max a typical 15 amp US household circuit.  Doing the numbers with a 13.5TH unit:

1323 watts plus 7% overhead given a 93% efficient power supply = 1323/0.93 = 1422 watts.

Presuming you have 115Vs available at the socket:  1422/115 = 12.36 amps.

Your breaker panel should have a 15 amp circuit breaker, which is rated at 80% continuous load.  Thus you can pull 15*0.8 = 12 amps continuously. 

If your lucky enough to have 120Vs available at the socket:  1422/120 = 11.85 amps.

As you can see, your right on the edge for what that breaker can support.  Obviously adding another 50+ watts for a 14TH box just pushes those numbers all the harder.

DO NOT replace your 15amp breaker with a 20amp breaker unless you want to potentially burn your house down.  Of course, if your in the rare house that has all the sockets wired for 20 amps, your golden.

Note this needs to be a dedicated circuit with nothing else on it.  If the circuit is shared for the room, you might, for example, pop the breaker by turning on the room lights!

One fairly common approach to this problem is to setup your mining in your utility room, if you happen to have one with an unused electric dryer connection.  Those are 220V and typically 30 amps.  You would need to make (or have an electrician friend make for you) and extension cord that plugged into that outlet with a few 220V receptacles on it.  You could easily support (3) S9s on that and perhaps (4).  Dryer circuits are always dedicated.  Another option is to use a 20amp dedicated circuit in a garage what was setup for a refrigerator, if that happens to be available.

So... once you figure out your power:  connect your power supply to the S9.  You MUST connect all 10 ports (3 per hash board plus the controller).  Place the unit where it can freely get and expel air, plug in your ethernet cable, and turn on your power supply.  You will hear the fans spin up quickly, then the unit with cycle for 10+ minutes figuring out the best hash rate per card.  While that is going on you need to figure out what address the S9 was given by your DHCP server.  If you don't have access to your DHCP server, you can use free tools like Advanced IP Scanner v2 to find it.  It should show up with a name like "antminer". 

Once you know your IP address, you can web over to the box.  Just type in that address (like 192.168.1.53) in your webbrowser and you should be greeted with a userid/password prompt.  Enter "root" for both and you will be in the control panel for the S9.  Go to the Miner Configuration tab and enter your mining pool information there.  Once you click OK, you should be good to go.

Note that all Antminers are configured out of the box to mine for Bitmain using your investment and your electricity to do so.  Setting them up to use your mining selected mining pool and credentials is a top priority.

After 10-20 minutes you will hear the miners running at full speed and the Miner Status panel will start to show the hashrate and ASIC status for every card.  This takes a bit after powerup, be patient.

I've found Fed-Ex to be cheaper than UPS.  It does get cheaper/tracking# with Fed-Ex as well.  I like my order of 80 cost me something like $350 in Customs fees.  Fed-Ex delivery guys also call me about 20 minutes before they try and deliver - but that might just be because I'm rural and a 1/4 mile from my gate.  That said, UPS delivery people were like "tough shit", and just leave a sticker.

I am getting S9 delivered today. It was shocking that UPS wanted additional $110 for Customs fee but I have no choice.

I bought an EVGA Supernova titanium(1600 W) and TP link Network range extender.
What I understood from reading this thread is that each miner has to be on its own circuit.
Is there any thing else I need or need to do before I can start my Antminer?

I am complete newbie to all this.  Any input from the experts is appreciated.

Thanks

Hi guys, sorry to piggyback off of this thread but it seemed like a good place to ask. If running 220v, the s9 draws about 7A so if you have a 200A panel in a house is there any reason why you couldn't install a 100A subpanel and then have room for around 8 S9s? If that isn't the case, could you explain why that isn't possible? Thank you.

You are talking about a nearly $500 PSU with average efficiency. Take that money and pay an electrician to run a proper 220v circuit, buy a $120 server PSU with more than enough power for the miner and then never worry about your setup again.

Why are people so afraid to just hire someone to do the proper electrical work?

So as long as you have it on one circuit per antminer, you can still use the 110v with the EVGA SuperNOVA 1600 shouldn't be a problem?
would u notice a loss in hashrate if not on 220-240?

All,

I have read every word of this thread, along with research of my own.. I am currently in a decision of housing the miners at my house or potentially considering a 1/2 rack at a colo.

I keep seeing everyone say, only 1 S9 per circuit/breaker.. Clearly, this does NOT scale for home mining..  If your plan is to run a single miner, or MAYBE 2, sure, that is doable, and most breaker boxes can A.) handle 2 extra breakers and B.) have enough left over amperage to handle 2 S9's without fear of tripping the main breaker into the house, etc..

I read one post where a guy was running a 220v/30amp breaker at the box, and had two S9's hanging off that, and looking at the math, could also run a 3rd on the same circuit without fear of melting or exceeding the rating.  I'm no electrician, and will absolutely hire a professional should I decide to mine at home, but having 3 miners on 1 properly-sized circuit seems much more scalable if you are trying to build a mini-farm at home.  I've seen video after video of plenty of people mining at home with 12-15 of these things, so I know it is doable.  But I doubt they have 15 individual breakers and 15 separate receptacles.. Some i've seen connect a few to a properly rated PDU off a twist lock 220 connection, etc..

I know at a colo, A.) I wouldn't have to worry about noise or cooling, but the monthly commitment would be quite a bit more than at home, even after the S9's add up on my utility bill.  B.) would be much more scalable once I grew to have enough hash power to offset that monthly cost.

I am trying to get some things in place before mine come in February '18, so any advice would be appreciated.. I don't want to hear "dude, did you search the forums?" lol.. Yes, several forums, and other places.. I would never try this myself, would absolutely hire an electrician, nor would I want to put my home at a fire risk.  Main reason I am looking for opinions is, based on the math, your 1 S9 to 1 Breaker isn't required.. Best practice for 1 or 2, sure, but doesn't fit a model where you want to expand.

Thanks in advance,

Matt

I’m in a similar situation. Two antminer S9 and two apw3++psu. I plugged them both into only US 120v outlets on separate circuits. They seemed to work great and ran just fine for nearly a week but I was becoming increasingly paranoid that I was going to burn my house down to the point where I couldn’t sleep so I just unplugged them for the night. Tomorrow I don’t know if I should sink $500 into two new power supplies or if it would be cheaper to hire an electrician. Do electricians have to come inside for something like this or can they just do it at the box ‘cause my house is a mess and I need this solved fast.

I am new to mining Just ordered my 3 S9's for new batch:

Well I have Electric dryer outlet ( 220~240 volt / 30 amp breaker - 4 prong Socket )
I want to run at least 2 S9's on it
Should I order this

https://www.amazon.com/dp/B00SOYBRCE/ref=asc_df_B00SOYBRCE5293254/?tag=hyprod-20&creative=394997&creativeASIN=B00SOYBRCE&linkCode=df0&hvadid=167125192708&hvpos=1o2&hvnetw=g&hvrand=16491355410385272625&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9026847&hvtargid=pla-340511534324
and connect my PSU' to it ?

Or

I need step down transformer which is around 5000 watt to 110v output

https://www.amazon.com/dp/B007YK55OA/ref=asc_df_B007YK55OA5293256/?tag=hyprod-20&creative=395009&creativeASIN=B007YK55OA&linkCode=df0&hvadid=167141218295&hvpos=1o18&hvnetw=g&hvrand=7914984236546052618&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9026847&hvtargid=pla-305850161251
and connect my PSU's to output socket ?

Which one is the better option ?

If some one has better idea Please suggest me.
***Yes I have very little knowledge of electrical wiring and I cant mess up with it I live in a apartment
Need 24/7 operation without worrying 

What is your setup with this dedicated circuit? Can you easily convert it to a 220v. To do that you need a spare breaker space beside your current 15 amp breaker.
If you could do that I would suggest do I g this and putting in a 20 amp 2 pole breaker ( or 30 if you plan to expand).
You may also want to consider just putting in a single pole 20 amp breaker, to atleast give yourself some wiggle room. I assume when you say dedicated you mean it only has the one outlet and you are only going to run this miner on that circuit.

If you chose to keep running on the 110, are you in Canada or the U.S.? There are a few companies you can order custom cables from. You just need to know what ends toy need at the psu side and outlet side.

a hot power cord is a bad sign.... 

The miner itself does not get hot, the chips actually run pretty cool between 65-70 degrees.  The aluminum case is cool to the touch.  Just my power cord to the wall is hot.

I've looked on Amazon and do not see a distinction between heavy duty and normal power cords.  I'm not sure what I'm looking for, to be honest.

You can look on Amazon for heavy-duty computer power cords - but - from everything I understand about this - you don't want to be running like this. Have you actually tested your voltage? Is it 110v or 120v? How about your wattage draw on your setup? If 110v with 1400w draw and 10% extra for plug connection - you are drawing ~14amps. If 120v at 1400w your are pulling ~12.83amps. Both of which are above the 80% max for breaker capacity that you should run at (14/.8=17.5amp and 12.83/.8=16.04amp). This makes your miner less efficient and runs hotter and will kill it faster. Depending on the size wire from your outlet to your breaker, it could be hot like your plug wire is. I've heard of people actually melting their outlet from the heat. The outlets are usually rated for a similar amperage too - probably in this case a 15amp load - but when constantly running it at a high capacity close to their rating - they get hot.

I am getting ready to set up an S9 miner and from all the research I have done - 220/240v is the way to go. It ends up using less power too (more efficient) so will lower the power bills over time and ofter run the miners at a higher hash rate than 110/120v.

I have one S9 plugged into a 15amp 110v dedicated circuit.    It has the Bitmain PSU, and I used a regular computer power cable to connect it to the wall.

I just touched the power cord going to the wall, and it's very warm.  I'm worried it will melt and pose a fire risk.  Is there a recommended power cord that doesn't get so hot?

Thanks in advance.

The specs on their website say yes. Do you already have that PSU in hand? You will need to order a proper cable to run from the PSU to the outlet. Are you planning on taking your dryer out of service for mining lol. If not you can wire up your own circuit and outlet(s) for this project.

Can I use 240V for the APW3++ with S9 miner? (Like a wall socket for dryer in Canada). Thank you.

You should ask the authorities if there is a power transfer scheme, instead of trying to do so on your own

CLEAR STRAIGHT ANSWER..YOU SHOULD NOT...USE 110v....
BUT PLEASE DON'T...I REPEAT .....DO NOT .....HEED THAT ADVICE


I have 4 S9's in Ottawa Canada..4 more on the way

I use ONE (manufacturer recommended PSU.....ASW3++)  for each S9

And since I knew they HIGHLY RECOMMENDED using 220V...and draw about 1600 watts/rms

(But please ignore this and use 100v so YOUR S9's will burn out fast and you will not be effective nor contributing to increasing the difficulty)

Meanwhile since A=W/V I knew EACH standard 220v/30 amp breaker can easily handle ...TWO ASW3++ PSU's... hence 2 S9's
(3200w/220v=14.54 AMPS)

I could even put a 3rd S9 PSU on the same breaker...but I don't
I could use a 220v 20 amp breaker for TWO PSU's....but I don't

And I run them COOL (15c-MIN-20c MAX) AND DRY and DOUBLE SUPER DUPER-UBER CLEAN and YES they CAN AND OFTEN DO HASH MUCH MUCH FASTER....

I do NOT make MONEY or PROFIT
I MAKE BITCOINS and NEVER SELL THEM...(except to buy MORE MINING GEAR..fans filter etc...)

Awesome. Thanks, it's reassuring. When I had him look at the specs I was expecting him to say to up the gauge and the amp of the breakers. He basically said that the amperage draw would benefit from being on an isolated circuit each.  I ended up getting one "6-20P to C13" cable rated 15 amps, but  I will probably go ahead and pick up the 6-15 to IEC C13. Looking at possible surge protectors (the international type that support that C20 - C15 socket)  and I'm just not sure whether it's a good idea or not.

I really appreciate it. After reading so much on the S9's and 220v I was unsure of the reliabilty or safety of single miners on single circuits. 

You'll be fine. A=W/V so @1,500w and 220vac that is 6.8 amps. The 2 miner together will only pull 13.6 amps which is pretty much perfect for the 80% capacity rule on wire and breaker sizing.

For cords I use these from Stayonline 6-15 to IEC C13
Yes a 15A plug works with a 20A socket but not a 20 into 15A socket.

Well, this looks like the thread to post for my issue. I really need some advice regarding... yes the 110-220v issue in the US. I’m moving from old SP20E’s to a single S9 and a single L3+ Antminer, both each with dedicated “Bitmain” AW3++ PSU’s (this batch shipping in August). I’ve gotten by on the SP’s but now I’d like to upgrade and learn a bit more.

I’ll do very low voltage no problem, but I don’t want to play with fire (literally) with higher voltages. I’m not an electrician.

I have a buddy/friend of the family electrician who came over, and I showed him the PSU specs from Bitmain’s site. We ran two separate 14 – 2 gauge wires to the server room. One for each miner only. He put each on it’s own 15 amp breaker, so one miner per circuit. The receptacle is a NEMA 6 – 20? It’s the one with the ground and the top two are horizontal (w/ the left socket optionally vertical).

So my concern is whether running Bitman’s AW3++ PSU on 15 amp breaker w/ 14 gauge is optimal. Mostly for safety. I can easily re-run this with 12 gauge, but will have him change the outlets and breakers if need be. Would really appreciate any advice regarding this. Also, any recommendations as to a surge protector and if I should stay with this configuration, any power cord recommendations to the AW3++ ?   

Thank you.

Just want to add my 2 cents about breakers tripping if drawing to much amperage.  A lot of people get the idea that if they keep popping a breaker when its overloaded to go and throw in a bigger breaker that can handle a lot more amps then what ever gauge the wire can handle at 80% max load.

If for instance you have small 10ga wireing going to your outlets and try putting a 20 or god forbid a 30 amp breaker in your box. You now have no safety whats so ever being you would have to draw 30amps or more threw that wire before it ever trips the breaker and if you are drawing close to 30 amps on 12ga wire at 120v that wire is going to get ripping hot and melt the insulation in a very short time and still not trip the breaker.  You may get lucky and have the wires melt and ark out and trip the breaker before it burns the house down. but its more likely to just get hot and start a fire inside the wall and never trip the breaker till its way to late..  and when that happens you might as well kiss all your btc mining bye bye.     I even have one s9 running on one of my circuits that it turns out the moron who owned my house before me wired it with 10 gauge wire going from the panel to another outlet then is daisy chained over to the outlet I was using but the bastard used a short pc of 12 gauge to go to that outlet on the daisy chain then to top it off the moron had it going to a 30a breaker.  and I only got lucky that i was able to feel how freaking hot that section of wire was getting it was almost to where the insulation was getting mushy and soft in just a few mins of use.   Luckily for me I've come to expect that sort of crap on everything in this house being the guy cob jobed everything he has ever touched in the entire house.

had I not noticed right away that there was a short section of wire that was getting  hot as freaking hell I'm sure the garage WOULD have burned down for sure with the old owners dangerous cob job and the real freaky part is he had 20amp outlets on wire that can't handle anything over 15 amp safely. 

Now im looking forward (not) to the weekend. I'm redoing most of all the wiring and even putting in a new breaker box and running dedicated lines and outlets for my miners and some other things that really should be on there own dedicated circuits.


 




 

Here's a gadget to get 240V if you can find two 120V outlets of opposite phase:
http://www.quick220.com/
DIY version for experienced EEs:
http://www.myrav4ev.com/forum/viewtopic.php?f=9&t=1023
Note that both the DIY and commercial versions have interlock relays to prevent undervolting the load if one circuit trips for whatever reason. It is very popular with EV owners who want to double the charging speed.

Since this has come up I also wanted to link to a basic wire gauging guide

If you're thinking about tackling a 220V either circuit conversion (mark the neutral wire with black tape at both ends! this will save an electrician a serious headache in the future) or running your own 220V circuit do everything you can to be over-safety conscious. I ran two 220V runs back when I was mining, the went go a few feet from my breaker panel, and I still ran 8 gauge wire for each 220V 20amp circuit (that was overkill, I could've safely installed a 30amp breaker... but I knew I'd be running this 24/7 and wanted some headroom on each circuit).

It's worth noting that you can't pull electrical wiring like a normal low voltage/data cable, refer to your local building codes for exact requirements. Not only do you have to be concerned about fire safety, but if the worst does happen, and your insurance finds out it was due to improperly installed wiring/not up to code they'll deny your insurance claim... this stuff is not to be messed with lightly. Even for the two circuits I ran myself I called the city inspector out (in my area if you own the home you can do the work on it, but it has to be permitted/inspected by a city inspector).

Just a few lines down is the Avalon thread with all your answers...
https://bitcointalksearch.org/topic/m.16806983

Yup.  I just so happen to have started a thread on the exact topic.

I wondered what others do for noise..
At first, I had it in the laundry room in my apartment.... On top the excessive heat and noise, the maximum I got was 9.259 Th/s.
It was becoming unbearable so I took it out to the balcony, put it inside my small bedside table with shelves (the air inlet facing the inside and air outlet facing the open side, then covered the open side with a pillowcase. Balcony is covered space to not worried about snow falling and melting on it.
Sorry I was more concerned about what to do with the monster than collecting stats so no rpm and temp information from before.
It's -8c out there and my S9 is running at 83c. Fan speed came down from about 4000rpm fan3 and 6000rpm fan6 to 3,960rpm fan3 3000rpm fan6 .
Highest Chip temp 83 = 28c
Currently mining at 13TH/s and more sometimes.. I saw the stats on my pool dashboard reach 14.78 Th/s at one point.

My project this week is building a sound insulated box with in and out vents. then I will start worrying about keeping it cool in summer. (I suppose a topic for new thread)
Is anyone working on something similar? Seems small sound insulated server racks cost more than the machine itself.

Run hotter - yes. The HP supplies will get uncomfortably warm to touch @ full load but that is normal. They are made to run like that for years.

As for the eff -- they were made in 80Plus ranging from Bronze (pretty poor) and currently up to Platinum (excellent). Prices for the PSU's reflect that: 80Plus Bronze ones can be had for as little as $15-20 and prices go up from there.

Thanks for adding some tips.  Please, let us know how they work out.  My understanding is that they run hotter and do not have the same efficiencies as other PSUs, which is odd because servers are extremely common.

I ended up going with an EVGA 1600W T2 for each of my miners.  They are plugged into their own 120v circuit and have been running great for a while.  I found another outlet that was on a solo circuit.  I guess that's the nice thing about unfinished basements.  As for the noise ...  I ended up getting acoustic foam, which helped, and high end noise-canceling headphones to provide a complete escape.  Diggin' the 13 and 13.5 - along with the high BTC prices.

Hey guys,
Noob, found this site while searching for a 110v psu, found a solution and thought I'd share for others.
ParallelMiner has HP Server PSU with adapter for running antminer S7 and S9 for 119buck.
Got my S9 three weeks ago and finally able to run it.
Now I got to deal with the heat and noise..
http://www.parallelminer.com/product/antminer-s9-power-supply-80plus/

Jaja.  

I can see that.  I've heard these called "wife-busters" from people who advocate for the use of server-type rooms to reduce the noise.

yeah, some use electrical dryer outlet (with an adapter), some even use electrical oven outlet (it is also 220V)
my use of these was vetoed by the "family", though. No can do...

I have two more unused 110v breakers. No idea where those go. I, also, have enough room to add a 220v.  I could run three S9s with a 50A and it would probably be best to put the two on a 30A and upgrade later with the addition of an S9.  I have room for another 110v. All told ... I probably have enough breaker space for 10 S9s before going to a separate meter - which I may do if these really do make money, then, I may as well start a business.

Is there perhaps an unused 220v outlet for an electric dryer as well? Seems many/most folks have gas dryers but since homes are pretty much mandated to have 220v available in the laundry area that goes unused... Mine is 220v 30A. Perfect for the 5ish kw I run at home.

It turns out there is one outlet in the basement that is on its own unused circuit! Great luck 

I ended up getting an EVGA 2600 T2. It's working well and maybe the eco mode will save .0001 BTC per month. Now, i just need to figure out what to do when I get the next one(s).

I have a Nema 6-15 to C19 cable for my Coolmax 1600W PSU...  I have plans to make a generator engine run on an "alternative" fuel source and run this power supply in the future.  I can just plug it right in, and it's about 6Ft long.

you CAN use a 110v outlet;  but that would have to be a dedicated circuit to be safe.
It could be a fire risk if the wiring in your house is pretty old.  If so, who knows to what spec it was wired to.

I ran an S7 @ 1000w and 1300w on a 20A 110v circuit that was shared with other things.  Wasn't a problem for me, but I monitored and checked everything first.

Understood thanks for the feedback guys. So I do understand the code regulation and why it exists and I am going to do it the right way.

Either get some NEMA power cords for the PSUs, or if I get a PDU right away, they likely have the same IEC female jacks.

Out of curiosity only, say I did use a 110V outlet - which I PROMISE I WILL NOT THAT WOULD BE DUMB!, beyond having to know not to plug any 110V devices in, is it also a fire risk or anything like that?

^^ is dead on! In North America you will have either a NEMA 6-15 or 6-20 for respectively a 220v 15A or 20A outlet. 110v outlets are NEMA 5-15 or NEMA 5-20. The layouts are non-interchangeable to prevent serious mistakes when plugging things in.

Cords for those are not hard to find online. The PSU end are IEC-13 and wall socket end most likely NEMA 6-15 which can also plug into the 20A socket (but not the other way). Of course using a 220v PDU in a way solves that issue because most PDU's use IEC outlets so the cords would be IEC male to IEC female.

Now, if the sub panel is being fed 220v then you DO have the choice of having it wired to feed for example say 2x 220v outlets or 4x 120v outlets because the 220 lines (with wired neutral) can be split into 110v circuits in the subpanel.

No. Installations must comply with ANSI standards.

I'm dealing with the same issue here. Going to have an electrician come in and install a separate circuit with a 20amp breaker to power 2 x S9s on EVGA 1600 P2 power supplies.

I wish I knew more but my lack of experience does leave me with some questions I'm hoping the electrician can answer. For example, if I install a 220V circuit, is it ok to use a 110V type power outlet so I don't use any special adapters for the PSUs?

outside meaning just outside the breaker box which is usually indoors or accessible from indoors here in Cali.

Wow!  It seems like mining has more sunk costs than anticipated.   I do know an electrician who may take a look.  It almost seems like running 220v is the way to go, even if I do an ATX supply at first.  It would give me room to add an additional S9 before reassessing.  I only have two unused breaker openings.  Oh boy ... this is kind of like it would be like to buy an old VW bus.  


Yes.


Bummer.


Yes.  I am new. I purchased my first BTC in October, bought an S3 in December and two S9s the end of January.  I am totally new to mining.  I did take electronics in high school - which was a while ago - and remember enough to know I will hire.


Even if I do 210/220v?


This is possible in my situation with a partially finished basement.  I think it's possible.  The only problem is the breaker is in the finished part of the basement.


On the outside?


It's much appreciated.

Each antminer will need to be on its own circuit.
One on one breaker with nothing else attached to that circuit,
The first one on one breaker,
  and another on another breaker with nothing else attached that that circuit as well.

Hopefully this clears up when I am trying to stress.  This is a key way to be safe with using a high power draw in a home.

For reference, a 1300W space heater can fry out a typical outlet switch;  so do not run them on switched circuits unless the switches are meant to handle the load.... Just use a non-switched outlet.

The antminer will be stress on the power lines for older buildings in the US;  and you could end up with issues if you aren't careful.    A touchless thermometer (infared or FLIR) are best to seeing how the outlets/cables are when you have it up and running.

Ideally, you want the power draw to be as close to the source as possible, simply to have less that can go wrong in the end.... but its not 100% necessary to do that.  Just a smart thing to do.  This is why a small conduit and outlet near the main breaker is what people often do.

These guys are giving good advice.  It would be smart to find someone who knows enough to check the wiring installed and see what it's rated to.  should be stamped on the sleeve.   Or if you bring in an electrician for advice, you could do that as well.

The power coming out of the power supply to the miner is relatively safe.   You really only stand a chance on hurting the power supply or miner in that regard.  Just don't open up the power supply, or use dodgy power cables.  You should be safe from the mains voltage if you aren't messing with it.

^ Ja.
Please do also remember the arc-flash hazard involved even with 'low(ish)' home power feeds of 100A.
http://api.vidyard.com/playbackengine/YUZpsL7LDv1iCc4qAycTOw/?iframe=true

It is MANDATORY that the main power be turned off before opening a panel box. And as the above graphically demonstrates, do not wear flammable clothing.

Listen to him!


@ op  not to be insulting   but your questions indicate you are new at this....


 110 power lines can shock.  220 can kill.

that sounds correct  does it not?  Well it is wrong.


110 power lines can kill you and 220 can kill you more easily.    < This is correct !!!

Be careful.

In case of modifications, I would suggest a qualified electrician to inspect the existing wiring first.

I think you should not use 110V for miners because it can reach the limit AMP on your wire. You only need to buy another breaker about 10USD and connect the white (neutral) to your breaker. It can double your power.

If you have breaker 20AMP, when you run 110V, you only get 2,200Watts, that means only 1x S9.
When you install 220V, with the same breaker, you can get 4,400Watts, that means you can run 3 x S9.

Those video will help you install breaker:
https://www.youtube.com/watch?v=BPzzL9OLwyw
https://www.youtube.com/watch?v=k95_Rnjr_DY
https://www.youtube.com/watch?v=bx7alt0gvLM

**NOTE: ALWAYS USE 1 HAND TO DO THE JOB, KEEP THE OTHER HAND ON YOUR BACK. (Electric shock is not fun)

YES, HUGE problem!
1st, I assume you mean using 2x of the ATX supplies to run the 2x miners right? A single supply will not run 2 of them.

As for the outlet, since each s9 will draw around 1,350w that puts the  combined load the outlet sees @ 2,700w. Fuses/breaker WILL trip in a heartbeat...

Especially when powered by 110v EACH miner MUST be on its own circuit. As in no toasters, microwave ovens, hair dryers, ect. sharing the circuit.

Thanks for all of the input.  I think I will probably go with an ATX and not server PSU with your help.  

It looks like people may run a single circuit, even 110v, for their miner(s).  I'm trying to save money as I only have two S9s that I want to turn into a multi-billion dollar business (don't we all  ).  I have a limited budget.

Is there anything wrong with plugging two S9s into an existing outlet using a 1600W ATX?  If spending additional money, would you either put the money into the efficiencies or dedicated circuit?  Any chance of blowing the hashboards if not done correctly?

Thanks a BTC!

NOTE: I've added a poll and appreciate any submittals.  I admit, I currently have my S3 plugged into a power strip  

Thanks! I've had my eye on the EVGA and LEPAs. Any noticeable difference with price paid per month per unit in electricity with higher efficiency PSUs?


Hmmm... I have two S9s with the Feb 20th shipment.

Thanks for all the details in your response. I'll have to read carefully on your experiences.


I agree with safety. Where I live, it's not only my house but also my neighbor's that we concern ourselves with when it comes to fire.  In the countryside you can basically do as you please in Montana. In the City, we are allowed to do certain aspects of wiring on our own, e.g., running cable that will be reviewed, but must it be certified in order to be compliant.

You would not like my state New Jersey   USA.

If you own the home  and live in it (i.e. do not rent it)    you are allowed to wire it yourself.

I wired my entire home  back in the 90's

We had aluminum wire  due to a copper shortage during the Vietnam war.

Many ares in the USA had aluminum wiring  lots of house fires.

When I purchased the home I found it need a full and complete wire job.

So I did it a circuit at a time.

I did hire a licensed electrician to install a 150 amp 32 breaker box.

If the op is in the USA.  he should have 2 hot wires into his box  110/120 each.

 He can do a 220/240 circuit .

 I have 3 in my home, one  40 amp  for the central ac  and  two 30 amp for mining.

Yes. That is why it is in most cases to give the job for a professional electrician who knows what he is doing.

I'm glad here in Finland laymen are not allowed to do electrical installations.
You need here a qualified electrician to do the installations.

Yeah, but these days most know an electrician that could do the work for them    Just a recommendation for the sake of safety on knowing the wiring between the high-draw device and the source is up to par.

If he hires an electrician to visit him, then he might as well have one two-pole phase-to-phase 208V group installed and use the Bitmain APW3 PSU.

Ok, if you want to power it on a single 110V circuit;

Use a power supply that is rated ~1600W to be safe.  There are several brands, Just make sure that the PCIE portion of the 12V rail can support 1400W.  For instance I have a Cooler Master I used on an S7 (about the same wattage draw you are looking at), and I used it on a 120v circuit fine.  I just had to re-pin the two 8 pin CPU plugs into PCIE plugs so I wouldn't overload the single 50A rail that supplies ALL of the PCIE ports.  The extra 50A rail only powers the CPU and the power supply would fry without this mod (it did fry, and the rest of these power supply models I was using were re-engineered to not let it happen again)


::Advice::
Run the antminer on it's own circuit.  I.E.  Not just one Outlet;  if any other outlets are turned off when you cut the breaker the antminer is on;  Then those are on the same circuit.  Do not run this through a GFI plug, or behind one on the same circuit.  You will have problems if you do not heed this warning.

If your power supply wiring or outlet its hooked to get warm at ALL... you are waiting for disaster.

What is best, is to have an electrician use adequate gauge wiring to add a breaker for a plug specifically to hook up the antminer only.    One 20A 110v breaker;  and one outlet.  If the electrician over-spec's the wiring gauge between the breaker and plug, you will be sure to not have a failure with the wiring.

One circuit:  one Antminer... when it comes to running them all on 110V.   Be smart, not on fire.  Trust me;  I ran the razors edge with an S7 for the better part of a year.  Melted many plug ends and a few outlets.  But;  it was what I had to work with (at that time with that machine and location) and the circuit HAD to be shared.

I suggest avoid step up/down converters.  you are adding inefficiency.  Just use one supply or the other.  Most supplies nowadays can simply just take a 250v input and auto-sense.

The main issue with server power supplies, is they usually supply one amount of wattage when running on a 250v supply, and another wattage when they are running on 120v.  Such is the case with a supermicro supply I have;  it does 1444/1000w respectively.  I personally don't know the breakout for it, and haven't (yet) been able to get it to power up (there's an enable pin just like an ATX supply) and plus, the card-edge connector is quite unlike a LOT I have seen in the past... so id have to make a custom adaptor with sockets scrounged from an old ISA slot.

The idea about step-up transformer might not be economically ideal.

There is good ATX PSUs available for 110V

Like Phil said, there is Rosewill 1500W for example
Rosewill TOKAMAK 1500W Full-Modular Power Supply (80 PLUS TITANIUM Certified)
https://www.newegg.com/Product/Product.aspx?Item=N82E16817182384

And also there is EVGA SuperNOVA 1600 G2 120-G2-1600-X1 80+ GOLD 1600W
https://www.newegg.com/Product/Product.aspx?Item=N82E16817438033

...
remeber...
if you are planning to use a  server power supplie, you need a third part object like breack board...
hese some examples...
https://bitcointalksearch.org/topic/wts-custom-server-psu-breakout-boards-1200w-1300w-2000w-2880w-4kw-738527

You can also use a step up /down converter.  I can say they work great but I've only used these temperarily (maybe for two weeks at a time while I install 220v.

search on Amazon for:

Goldsource STU-3000 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 3000 Watt

Posted From bitcointalk.org Android App

No server supplies need 220 volt. There are exceptions



Rosewill makes a titanium 1500 watt psu.
You can also try two rosewill quark 1000 watt psu they were on sale at
Newegg still are on sale at 120 each .

I think sidehack has a 900 watt server that runs on 120 volt

I bought one of the BITMAIN psu units and realized it's for 220v and I do not want to hire an electrician.

I've looked at the ATX power supplies like EVGA 1600 series, but have also seen / heard server power supplies work.  Is this true?   

What do you think is the best way to power the Antminer S9 using 110v? 


¡Mucho gracias!