Topic: U.S 110v PSU for Antminer S9 suggestions please - page 2. (Read 711 times)

That supply should be able to handle a single S9 but you definitely want to check the gauge of the wire going to the 20amp outlet.  If you are pulling 1300-1400W continuously though it it should probably be 10gauge if possible.  Based on this article (https://www.kitguru.net/components/power-supplies/zardon/%ef%bb%bfevga-supernova-p2-1600-supply-review/3/) you can pull about 1600W though the 12V rail on that power supply.  Don't be surprised if the PCI-E wires and/or power cord gets warm.

Good luck and I hope it all works for you.  BTW, if you have two 110V lines available, then you could easily do a 220V lines (like we do in the US) since it is likely there is two phase.  Nevertheless I understand the hesitancy to go that unknown route especially if you are renting.  Again, good luck and be safe!

I don't know all the technical reasons to do this or not to, but I have to do it with 110V and I'm going the EVGA 1600W P2 route. I haven't seen anyone here in Japan having issues running that, and I always go off of real world experiences/advice from friends/family I know are qualified vs. advice off the internet...and I would advise you to do the same! Which means, take everything you are reading in this post with 100 grains of salt. We don't have the option for 220V here. My rooms are each setup on 20A fuses and that room in particular has very low draw coming from it as it only has 2 lights and we never have them turned on. I will of course have my trusty friend over to test the pull, go over all the numbers before I hook anything up, and he will be there with me during initial power on to watch everything. If HE says there is a risk of fire or other issues, I'll think about running 2 separate 110V PSU's, but that's unlikely based on what my friend is telling me at this point. I'm not in the US though, so hard to say.

And yes, for me, it's very much worth the $400 price point to get the EVGA as that seems to be the best option at this point. Just my $0.02, YMMV!

Thanks for the info. I'm living in an apartment complex. The lines are more commercial and can handle the load if running a single ant miner per circuit. Installing a 220 is not possible unless there is a way I can have my washer and dryer unplugged and use that input.

You really do not want to run an S9 on 110V power especially if you are trying to do it on a single circuit.  

Here are the list of just a few reasons I could think of quickly:
- It is not safe.  The S9 draws as much as 1600W on a 100 line.  90% of residential wiring in the US for 100V is 14 gauge (2 or 3 wire).  At best you will pop the breaker (15Amp) but then if you replace that with a 20Amp breaker,  then you run the real risk of a fire!  When you constantly run 12-14Amps through a wire rated for 15Amps it gets very hot and will cause house fires.
- Even if you use two PSUs and two 110V lines, you have to make sure you have both lines fully dedicated.  If you do that, there is no point in not just doing 220V.  In the US 220V is two 100V lines - the plug has two hots and a ground (it is also possible to have four wire with a neutral but that is unusual - in the US the two 110V lines are 180 degrees out of phase so they alternatively act as each other's neutral).   Anyway, the point is when you use two separate 110V lines you either dedicate two lines running at 60% capacity or you run the risk of someone plugging something else in and risking a circuit breaker popping, an overload on the S9, or a fire again due to heated wiring.
- Finally, using 220V is more efficient since the same wattage on 220V will be less amperage - closer to 8-10Amps.  

IMHO, Everyone should really stop trying to run S9s on 110V - it is a safety hazard and just a bad idea all around.

Larry
(FWIW, I am an Electrical Engineer and have done a lot of electrician work in the US)

Server PSUs will only output enough wattage if they are on 220. 110v gives them decreased funtionality.

If you are thinking of throwing that much money away on a PSU you may as well just pay to have a 220v breaker/socket setup. Then you only need to spend $100 for a PSU strong enough to run an S9.

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.