Topic: Antminer power supply - help with power cable (Read 1202 times)

pretty much..    if you buy 2 cords each will be to 1 psu.  the psu maxes at 1600 watts

1600/240 = 6.67 amps
1600/240 = 6.67 amps    thus  2 safe s-7's  with 6.67 amps to spare on that circuit   no more outlets  if you add 1 more out let    you could do 3 s-7's  and be pretty much maxed.

one last thing make sure the breaker only runs to the two outlets you have. and no other outlets.

unless you have the electric guy add a third  to fit plug 6-20p.

your issues can be fixed a few ways but I need a lot more info to help.
--- cool. I'm happy to provide more info.  : )

first off you should have asked us before you installed with a pro
--- agreed.

so how many 240 breakers are put in?
--- the breaker shown in the photo is the only one.
--- it is powering TWO outlets (but I only showed a photo of one)

if you have 3, 240 outlets all to the one breaker you could run 3 s-7 's and 3 psu's with 3 of the  power cables you linked us to.
--- ok cool.
--- So, the power cable I linked to is sufficient for this job?

Also... I did have the following chat with a sales rep from PDUwhips.com:

Chris at 9:19, Jan 14:
Hello how can I help you?

You at 9:20, Jan 14:
hello... I'm looking for: 20 Amp, 250V Power Cord Plug --- with 6-20P on one end and C13 on the other

Chris at 9:20, Jan 14:
We have these. Here is the page:
http://pduwhips.com/products/2121-computer-power-cords.aspx

You at 9:20, Jan 14:
That's 15a

Chris at 9:21, Jan 14:
Yeah but the C13 is rated for 15A max, so it will not even fit onto a 12 AWG cable

Chris at 9:21, Jan 14:
The plug is rated for 20A max, but since you have gear that has a male C14 needing to connect to that C13 it won't pull more than 15A. In fact, it probably pulls far less

You at 9:22, Jan 14:
see details here: http://www.boisebitcoin.com

Chris at 9:22, Jan 14:
Your electrician here was wrong:
"no, the cable needs to be 12/3 20amp 250v".

Chris at 9:23, Jan 14:
Trust me, if you have a device that requires a C13 it does not pull more than 15A

Chris at 9:23, Jan 14:
that is why you are not finding what you need

Chris at 9:23, Jan 14:
He is just assuming that since it has a 6-20 plug that it requires a 20A cord

You at 9:23, Jan 14:
ok... got it... so you're sure that this product will work? http://pduwhips.com/products/2121-computer-power-cords.aspx

Chris at 9:24, Jan 14:
Yep

You at 9:24, Jan 14:
ok... that is cool. thanks for your help.

Chris at 9:24, Jan 14:
no problem

--- so, Chris is correct, right?

Corsair was recommended for antminers.
They seem to have atleast 90% power efficiency and the voltage of the new ones can be changes.
I would refer you to the bitmaintech website for a purchase of these specific to the device in question.

Also, possibly good to check Amazon to see if ther eis anything etter you can get or corsair directly.

One thing to the electrician might be trying to drum up business.  I still remember when I got a little over 1k quote for 1 240 breaker to be put in and 10 foot of cable or so running on outside of wall.   It was less then a 10th of it to do it with a family member.  

And they were a good company in past they did air-condition repair for me.   The electrical side though they were just insane on.  Part of which I still wonder was the electrician seeing my mining gear that it had an effect on him.

your electrician is wrong. (well a little bit)


"Not wanting my miners to catch on fire or spontaneosly combust (whee!), I decided to ask my electrician if that power cable would work. His response was "no, the cable needs to be 12/3 20amp 250v". So... first off I have no idea what the 12/3 part of this means, but I believe the problem is that the suggested cable is 15v while the breaker is 20v. Is that the reason this cable wont work?"

14/3 vs 12/3 wire   the 14 is skinner then the 12  the 3 is how many wires in the cord

the cable you have asked about in your blog is 14/3 15amp 250volt  it can  provide

240 volts x 15 amps = 3600 watts    so it can run 1 psu with ease. as that psu only draws  1600 watts.

your issues can be fixed a few ways.

but I need a lot more info to help.

lets go slow

 1) first off you should have asked us  before you installed with a pro as you may have did a bad setup.

2)  you show us 1 breaker  that is 20 amp for 240 volts or   about 4800 watts.  that is 3 psus' max  3 s-7's max

3)  so  how many 240 breakers are put in?

4)  you mention multiple 240 outlets how many are there  and if there are 2 are the 2 controlled by the one breaker?

5) if you have 3    240 outlets all to the one breaker  you could run 3 s-7 's and 3 psu's with 3 of  the  power cables  you linked us to.

You might look at a PDU for 220/240.  You could then plug the PSU's into it.   You would need to get one that provides that wall plug or a nice adapter.

But PDU's the nice thing is if you get a good one they have proper cabling for how ever many amps they are rated for.  So it carries the higher wattage then you can split it from there to multiple miners.  On ebay you can get them much cheaper then say amazon or local store.

Hello everyone.

I am new to the forums. I plan on spending some time here. Seems like a cool place.

I'm hoping you can help me... see my post here for photos and details:

http://www.BoiseBitcoin.com/

I appreciate any advice you can offer.

Thanks!!!

BoiseBitcoin