Bitcoin Forum

I'm looking to setup a few Z11 machines on 120v power. Does anyone have first hand knowledge on doing this? I don't have access to 220v power and I've got ridiculously inexpensive power where I'm at. Any advice would be greatly appreciated.

this belongs in alt coins. i will ask mods to move it.

i will also answer question for you.

first off what are your receptacles how are they fused and are they 20 amp or 15 amp.


next are these dedicated receptacle with nothing hooked up to them?

they spec as 1418 watts which is 12amps.

this means only 1 unit on a 15 amp circuit and nothing else at all.

12/15 is 80% that is a code require safety margin for 24/7/365 runtime.


1418 watts is about 5000 btus of heat.

so you will need to vent heat someplace if you plan on running a few of them.


 the wire from the circuit breaker to the plug needs to be 12awg

the wire from the plug to the psu needs to be 14awg.

lastly is what psu to use. hard question not many psu’s will give you 1418 watts 24/7/365 on a 120 volt circuit.


the bitmain apw7 will not work it needs 220volt to do it.

evga 1600 gold will do it
evga 1600 plat will do it
evga 1600 titanium will do it

corsair has an axi 1500 and a an axi 1600.  they will do it.


all of those psu are costly. so good luck.

They will be 100% dedicated circuits, I can go with either 15 or 20a. I don't necessarily have to use just one psu per machine but I have 0 experience using two psu's on the same machine.

okay two per machine is harder. but can be done.


you could use

2 bitmain apw7

2 apw3+


they will do enough. about 1000 watts each.


i have done this with many miners.


may i ask why you can not go to 240 volt?


you must wire the gear correctly when you use 2 psu or it will kill the miner.

I have a large RV and live on a farm that has a very large off grid solar array, I have access to two 50a 120v circuits. We don't have anything setup for 220v and with the cost of upgrading the equipment it just isn't worth it. I don't mind splitting up the psu's if needed,  just trying to make this all work because of the almost unlimited nearly free electricity.

sounds reasonable.

get a 20amp receptacle from home depot lowes etc.

i will link one here.  you need at least 12 gauge wire going into the receptacle .



https://images-na.ssl-images-amazon.com/images/I/71nPYFVjN0L._AC_UL115_.jpg


https://www.amazon.com/Leviton-CR020-W-Receptacle-Commercial-Grounding/dp/B003ATTR8Y/ref=pd_cp_60_2/130-0688445-0171460?

note it is important you get a 20amp not a 15 amp.

feed it with this gauge wire

https://www.amazon.com/Southwire-28828226-SIMpull-residential-electrical/dp/B0069F4CXQ/ref=sr_1_2?

https://images-na.ssl-images-amazon.com/images/I/51ivaFzT2hL._AC_UL115_.jpg


use two of these

https://www.amazon.com/APW7-Antminer-Power-Supply-Connectors/dp/B07F8F4QWV/ref=sr_1_4?

note the
apw3
apw3+
apw3++
may not have the balls to do it on  120volts.

use these power cords.

https://www.amazon.com/C2G-Premium-Universal-IEC320C13-Compliant/dp/B00009OLLS/ref=sr_1_7?

note these are 14awg  this is important.

when you have the z11  take the cowl off the top  you need to expose the connections.

take a photo and post it here..

I will tell you what to do.

---

 psu one will do this                               psu two will do this
                       
                                                                               jack note for controller


jack  jack                                       jack
jack  jack                                       jack
jack  jack                                       jack



10 jack bit main gear can be wired as above


13 jack bitmain gear is a bit different

not sure if the z11 is 13 or 10 jack

For whatever reason it won't let me upload a picture. But mine looks exactly like this, it's a 10 plug.

https://www.eastshore.xyz/wp-content/uploads/2019/04/Antminer-Z11-Zcash-ASIC-Miner-135k-for-Zcash-Mining-IMG-03.jpg

But I see exactly where you are going with rewiring the two apw7's and how this could absolutely destroy the miner is done incorrectly.

yep  give me a minute i will use your photo

you could use this psu

https://www.corsair.com/us/en/Categories/Products/Certified-Refurbished/Power-Supplies/RMx-Series/p/CP-9020179-NA/RF

for the four jack

and this psu for the 6 jacks

https://www.corsair.com/us/en/Categories/Products/Certified-Refurbished/Power-Supplies/HXi-Series%E2%80%9A%C3%91%C2%A2-HX1000i-High-Performance-ATX-Power-Supply-%E2%80%9A%C3%84%C3%AE-1000-Watt-80-Plus%C2%AC%C3%86-PLATINUM-Certified-PSU-%28NA%29-%28Refurbished%29/p/CP-9020074-NA/RF


https://i.imgur.com/oDDa1QL.png

Will I have to do anything internally with the psu's? Or do I just plug them in as described?

just plug them in as illustrated the three jacks feed one board.

the boards are independent.


the mistake is two psu feeding one set of jacks/one board.

that will kill the two psu and the board. and the controller.


before you power it up post a photo or two i will look at them for you.  just to be sure you do not kill the gear.

Looks like I should be able to run a 1000w and and 700w psu off one 20a circuit, I'd only be pulling 14.9a. Do you think this would be safe for 24/7 operation?

borderline but yeah.  16 is max  for 24/7/365

Will you use this receptacle ?



https://images-na.ssl-images-amazon.com/images/I/71nPYFVjN0L._AC_UL115_.jpg



it can do it in theory but if you use 2 of them in this case


https://images-na.ssl-images-amazon.com/images/I/71lGn3XhvJL._AC_UL115_.jpg

https://images-na.ssl-images-amazon.com/images/I/41D1qOmPXYL._AC_UL115_.jpg


all 12 awg wire    it is safer  as  each receptacle is rated for 20 amps  and one is  using say 8.5 amps the other is using 6.4