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Author Topic: U.S 110v PSU for Antminer S9 suggestions please  (Read 417 times)
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Electrician. Mining since 2014.

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February 18, 2018, 10:34:31 PM

I know this has been asked and trust me I've googled. Most things I've scene googling are sold. I'm looking if someone could point me directly to something in stock that will power the S9 on a standard U.S outlet safely under $400

I've scene the EVGA 1600W PSU but they are $450 and people have had problems.

I've scene a couple kits that use 2 server PSU's but would prefer to stick to 1.

I see a lot of server psu's on ebay that claim to run but I'm not technically knowledge enough to know what the cheap and scam ones are. They all claim high efficiency.

why not run 2 of these

use one on blades 1 and 2

use second on blade 3 and the controller

even better/cheaper you could use this.


Please notice that has wrong instructions for their HP server power supply kit, which will most likely end up creating a hardware failure situation, in which the two different power supplies kill each other.

Never connect two power supplies into same hash board. They'll 'fight' each other to death.

With 110V mains voltage, two power supplies setup and Antminer S9, I would definitely use one HP DPS-1200 FB A and one HP DPS-750RB A
for the power supply setup. DPS-1200 connected to two hash boards and DPS-750 connected to one hash board and control board.
See instructions in the image above (the one with green text).

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February 19, 2018, 11:26:20 PM

It only costs about $180 dollars to install a 30 amp circuit in you home. You can then run 4-5 s9’s off of that.

Is it really that cheap to run a 30 amp circuit?  What about rewiring for the outlet?
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February 20, 2018, 02:00:43 AM

It only costs about $180 dollars to install a 30 amp circuit in you home. You can then run 4-5 s9’s off of that.

Is it really that cheap to run a 30 amp circuit?  What about rewiring for the outlet?

Honestly it's hard to estimate a price for all environments and areas of the country. But I would imagine if all that needed to be done was run some wire and an outlet then yeah it wouldn't be too much. **But** everyone's house/building/shed is different so just use it as a very rough guide.

Friends don't let friends use 110V
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February 20, 2018, 02:53:18 AM

I would use two APW3++ power supplies off of 110.  Decent quality computer power supplies are getting WAY too expensive these days and a cheap off brand one would probably have less resale value than an APW3++.

I have had good experiences running Avalon miners on 110v from an APW3++.  Other people have ran S9s on 110v using a single APW3++, but internal components are likely being stressed beyond their engineering.  I wouldn't recommend doing that.

If you want to buy computer supplies in the can sometimes find them cheaper from or AFTER shipping to the US than in the US!
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April 06, 2018, 08:35:26 PM

Correct me if I’m wrong but if you are running the appropriate gauge wiring on 30amp breakers you can easily run an s9 on 110v.

Most residential circuits in the US use wiring and breakers sized for 15 amps INTERMITTANT service at 117 VAC.
Some "kitchen" outlets, and most A/C outlets are sized for 20 amps at 117 VAC but those are not all that common outside of kitchens.

When operating equipment 24/7 the NEC requires you to derate the circuit by 20% - so that "15 amp" circuit in CONTINUOUS USE like with a miner becomes a 12 amp circuit for safety reasons.

30 amp wiring at 117 VAC pretty much doesn't exist in the US - higher power appliances and equipment is designed to use 208v (industrial split out from a 3 phase circuit) or 234 v (standard "use both hots on a standard split-phase residential or SMALL business feed) instead.

Yes, IN THEORY you could have a 30 amp 117 VAC feed wired up and run an S9 from it - but in practice, if you're going to have such a RARE feed setup installed (and good luck finding OUTLETS for it, anything over 20 amps in the US is specifically intended for use on 234 V - there is no such thing as a NEMA 5 outlet at higher than 20 amps) you'd be better off just having a STANDARD 234V circuit and outlet(s) installed instead.

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April 06, 2018, 09:59:02 PM

it will cost you a few dollars at most to install a 20a 230v outlet. check your local codes but you literally only need a 20a breaker or {30a &10ga}, 12ga wire and the outlet. it took me maybe an hour to install one in my home. if you're tech savvy enough to run an s9 installing a breaker is even easier. make sure to do it during the day as you have to kill the main breaker to do it and won't have any artificial light. a $10 book will hold your hand through the whole process
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