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Philipma1957cellphone
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October 12, 2019, 01:47:00 PM |
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70 th at 46 watts is 3220watts hopeful to get one to test it.
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This is philipma1957 alt. Do not conduct business with this account
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wndsnb (OP)
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October 12, 2019, 02:24:43 PM
Last edit: October 14, 2019, 01:00:26 AM by frodocooper Merited by frodocooper (3) |
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Have some dead Bitmain 17 series hashboards or full miners?
I'll buy them ... send me a PM with what you have and I'll make you an offer! |
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AlecMe
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October 12, 2019, 03:07:53 PM |
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Goood , another 3kw miner  No hope for the little guy after this halving if this carries on  On the other hand, I am glad there is some serious competition already to Bitmain, let's hope those prices will drop  |
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Philipma1957cellphone
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October 12, 2019, 03:29:49 PM
Last edit: October 12, 2019, 03:51:03 PM by Philipma1957cellphone |
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Yeah it is all industrial gear. Numbers looked good for a 82f room.
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This is philipma1957 alt. Do not conduct business with this account
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digital$
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October 12, 2019, 07:41:36 PM |
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single phase(80 amp input)in my small garage setup wired into a DB box fitted with 5X30amp breakers...breakout leads to 10 plugs, these 3kw+ units are forcing me to consider a 3-phase supply. i'm assuming these will run consistent 10-12+ amp output each unit...not much headroom in my setup :/
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philipma1957
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'The right to privacy matters'
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October 14, 2019, 02:29:14 AM |
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single phase(80 amp input)in my small garage setup wired into a DB box fitted with 5X30amp breakers...breakout leads to 10 plugs, these 3kw+ units are forcing me to consider a 3-phase supply. i'm assuming these will run consistent 10-12+ amp output each unit...not much headroom in my setup :/
Photo shows 1x c19 and these are about 3200 watts so 14 amps x 230 = 3220 watts if you are running these 4 x 14 = 56 56/80 = 70% so 4 units for you A lot depends on ship time and price. they claim 47 watts a th that is good. |
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wndsnb (OP)
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October 14, 2019, 12:53:27 PM Merited by frodocooper (1) |
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A reply to a question on Canaan's twitter account says the first batch will be end of January, beginning of Feb.
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Have some dead Bitmain 17 series hashboards or full miners?
I'll buy them ... send me a PM with what you have and I'll make you an offer! |
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fccs
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October 14, 2019, 06:46:52 PM |
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The funny thing is, this again, will probably not do that well due to the same issue inno, whatsminer, and now canaan all seem to be too blind to see vs bitmain. 1 power connector. Bitmain has 2 on all there miners. So bitmains miner that would be 3000w = pdu friendly, everyone else... = not friendly. This would be pretty interesting especially if price but yea, 1 connect is a no go for many of us.
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NotFuzzyWarm
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October 14, 2019, 07:09:12 PM
Last edit: October 15, 2019, 12:52:22 PM by NotFuzzyWarm Merited by frodocooper (2), yxt (1), HagssFIN (1) |
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A single connector makes no difference to me. My pdu's have outlets for both c14 and c20 male ends so is piece of cake to use it with the correct c20 to c19 cordset. Of course can only power 2 per pdu though...
As I mentioned earlier in one of the BM threads, what I'd like to know is if the BM miners have 2 psu's in the 1 case as that is the only way using 2 feeds to 1 device would be permitted by electrical codes. IF those power inlets are simply in parallel with each other there are several very bad possible situations that come to mind, 1 being the male end of a cord being live when unplugged from the wall...
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philipma1957
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October 14, 2019, 08:03:56 PM
Last edit: October 15, 2019, 12:50:50 AM by frodocooper |
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Single cable with 2500 watts is fine
single cable with 3220 watts is not fine for me. Clifton is 208volt 3-phase we run around 217-227 volts with a drop to 187-190 at times.
3220/208 = 15.48 amps a c19 is 16 amp for 24/7/365
but Canaan is smarter then the whatsminer's m20s that gear is 3450 watts which is not code for a c19 as
3450/208 = 16.58 amps.
3450/217 = 15.89 amps.
I have 2 whatsminer m20s so far they are good on the 208 3 phase with the one cord. they have a down clock function if the psu runs out of balls due to lowered volts they downclock the unit. every once in a while my m20s drop from 68 /69 th to 50th I have determined that happens we we get the voltage drops.
If the new cannan/avalon gear does this then it is not a big issue.
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fccs
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October 15, 2019, 02:24:12 AM
Last edit: October 15, 2019, 04:47:48 AM by frodocooper |
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Same, 3200-3400w on 1 cable into a pdu is way too much. My pdu's as most are 15amps each bank as well. I don't run more than 12amps each bank, meaning 24 amps each pdu into a 30amp 240v outlet. So this one plug stuff is tiresome and the reason sales are crap and will most likely be. Whatsminer m21s, an m20s are very very easy to get, and get at a rather good price these days in stock ships today. No one wants them because most places do not want to direct plugin to wall. Bitmain knows this, and solved that issue. Apparently canaan didn't get the memo though so hey whatever. lol
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NotFuzzyWarm
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Evil beware: We have waffles!
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October 15, 2019, 12:56:01 PM
Last edit: October 15, 2019, 01:38:29 PM by NotFuzzyWarm Merited by frodocooper (1) |
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Apparently canaan didn't get the memo though so hey whatever. lol Or they just prefer to follow some semblance of proper electrical design (tho yes they *are* pushing the plug rating) vs winging it and letting the chips fall where they may.  |
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Philipma1957cellphone
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October 15, 2019, 02:46:12 PM
Last edit: October 16, 2019, 03:27:56 AM by frodocooper Merited by frodocooper (2) |
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I am going to order a t17 I will open psu and check its insides. I will show photos. The two plug design knows you have one plug.
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sidehack
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October 15, 2019, 02:58:44 PM |
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Do the *17 miners have four boards or three? An odd number of boards would weigh against an internally dual supply.
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NotFuzzyWarm
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October 15, 2019, 03:05:47 PM
Last edit: October 16, 2019, 03:29:16 AM by frodocooper Merited by frodocooper (2) |
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I am going to order a t17 I will open psu and check its insides. I will show photos. The two plug design knows you have one plug.
Which would imply that it is a dual PSU. If not, barring using 2 power relays wired to monitor each input and open/close the circuits (pricey & bulky) the only other way to isolate the power inputs so you don't (usually) have a live cord end when unplugged would be to use 2 bridge rectifiers, 1 for each power inlet, to give the raw DC that is fed to the switching portions of the supply. While it would mostly satisfy that safety aspect it also raises a few questionable design points regarding the current ratings of the bridge rectifiers and what happens if a portion of one shorts. Either way, as a designer I'd go with the single high current power inlet even if it means breaking the mold of how it was done in the past. It's just the right way to do it. In my book since large farms already have to deal with the very different cases, power inputs just become another part of what they need to change. |
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sidehack
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October 15, 2019, 03:39:41 PM Merited by frodocooper (1) |
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And if I was doing it I wouldn't build a machine requiring a 3300W PSU.
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Philipma1957cellphone
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October 15, 2019, 04:00:44 PM
Last edit: October 16, 2019, 03:30:00 AM by frodocooper |
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And if I was doing it I wouldn't build a machine requiring a 3300W PSU.
this is my thought. Get a 2800 pull use a c19 and no issue with a 208 3 phase supply. |
This is philipma1957 alt. Do not conduct business with this account
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fccs
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October 15, 2019, 04:13:34 PM |
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And if I was doing it I wouldn't build a machine requiring a 3300W PSU.
That would be the common sense answer lol |
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dogjunior
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October 15, 2019, 06:12:56 PM |
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The funny thing is, this again, will probably not do that well due to the same issue inno, whatsminer, and now canaan all seem to be too blind to see vs bitmain. 1 power connector. Bitmain has 2 on all there miners. So bitmains miner that would be 3000w = pdu friendly, everyone else... = not friendly. This would be pretty interesting especially if price but yea, 1 connect is a no go for many of us.
If you run in a data center, they can handled the power requirements. A home miner makes it more difficult not not impossible. I am running my M20S with one C19 on lower power at 1950 W on a 20A 208 circuit. I could push it to the normal setting but then it would go to 3150 W. More noise that I can hear in my living room from the garage. |
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