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I'm beginning to wonder if you have a 300 amp breaker thrown in a main panel rated for 200 amps. Also, when you say, "All on 120V," are you using 2 pole or single pole breakers for your rigs?
Isn't a 200 amp main at 240 volts? So it would be 400 amps at 120v? Use both legs on each breaker 200 amps max One leg on each breaker 400 amps max Same power/wattage either way I can agree with the 200 amps on each pole for a total of 400 amps combined. However, the main breaker is designed to trip IF EITHER POLE exceeds 200 Amps; not both. [/quote] That's what I've been trying to convey Wolfen, however technically its not combining the Amps. Each leg has a capacity of 200A. The Main will switch off if either LEG exceeds 200Amps is true - however if you load 160A on each leg you are not Exceeding the 200A per leg. I'm using single pole breakers for the rigs - mostly consisting of 20A and 15A circuits - a couple of 30A circuits run to out buildings. 2 Pole breakers would be 240V no? My service is rated 200 Amps according to electric provider. The main appears to only be 180A on the panel, which seems right because if I load over 170A on one leg the panel gets very warm and will switch off after 30 minutes or so. Load balancing the 2 legs/poles and I have zero issues running the 230+ Amps of rigs and other electronics. It took a lot of trial and error as well as hand-charts to balance the load, but before I had s7's I had 25 s5's and 4 S4's along with the scrypt miners running all summer without issue. Yes the main panel got warm in the summer and I put a fan on it to help cool it down, but circuits held and nothing burned up. |
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You have too many conflicting statements, Sir. It's so confusing that I don't know what you are trying to imply anymore. It's just not possible to pull 32,000 watts at 120 volts (266 amps) through a 200 amp breaker UNLESS the breaker is defective.
OK, believe what you will. I do know several "licensed" electricians and had one confirm with me today, after these exchanges, that it is Per Phase on the Main - not total. So each phase can be loaded with 80% load and the main will not trip as they are out of phase and not an addition of current. Here is a list of miners and wattage that I am currently using - all at 120V. They alone are exceeding 200A in power usage - 13 x s7's = 15730 WATTS 8 x s5's = 4720 WATTS 1 x S4 = 1400 WATTS 3 x A2 @ 88 = 2250 WATTS 4 x A2 @ 110 = 4000 WATTS TOTAL WATTS = 28100 @ 120v = 234A The only 240V circuits being used are 1) Stove - 2) Water Heater. Even with the miner loads, I'm still able to use all sorts of other electricity - IE this computer - a couple 1000 Watt gaming machines, a 200 Watt Laser Cutter, air compressors, electric drills, radios, garbage disposal, hair dryers (when gf needs), and charge my Chevy Volt. You are saying this is impossible, unless defective - seems to be working. |
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Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.
I'll post this to you again. You may not have read it: Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers... If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits for a total of 48,000 watts of power. If we used 10 x 20 amp / 120 Volt circuits in a 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power. So, both Main Service Panels were rated for 200 Amps maximum. However, we can utilize the power much better with 240 Volts instead of 120 Volts. Does this make sense now? notlist3d, is right... It sounds like you need an electrician. Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt. Your Main Service Panel is rated in Amps and Volts. It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home. I agree with this statement to a point, but I believe the 200AMP main service is related per pole and not total - So if you approach 200A on either pole you will trip the breaker. If you divide the 120V services up between the poles equally, end result would be the same with 48000 Watt capacity. I know from experience a 200 amp main service panel is not rated for 200 amps for each pole. I purchased enough rigs to trip the main breaker at 200 amps on both poles combined. I was an electrician for 3 years in commercial work for Marathon Electrical Contractors. I was taking classes at night to get my masters certification but did not take it to completion. I've tripped my main service panel several times over the summer trying to figure out how many rigs maximum I could run on my 200 amp main service panel. All of my PDU's are "metered." Trust me... I don't "believe" the 200 amp main service panel is 200 amps on each leg. I "know" It's NOT 200 amps on each leg. I "know" from experience. I'm not saying this with a "tone" to be argumentative. I'm saying this in a manner to try to educate. That's all... A 200 Amp Main using 10 x 240 Volt / 20 Amp 2 pole breakers with maximum draw on each 2 pole breaker would pull 48,000 watts of power at 200A/240V. Any more than this "should" trip the main breaker.
A 200 Amp Main using 10 x 120 Volt / 20 Amp single pole breakers with maximum draw on each single pole breaker would pull 24,000 watts of power at 200A/120V. Any more than this "should" trip the main breaker.Also know this: Current (Amps) is not flowing in a circuit without a load on that circuit. Meaning, current (amps) will not flow without an appliance, light, TV, etc... actually turned on and running. So, just because you have breakers in your main service panel that probably total up to more than than what your main breaker states is because it's highly unlikely you have more than 50% of current draw on every circuit wired to the main service panel. Just thought id chime in on this for a second.. I had an electrician install 400 amp service on my rent house.. We split the output into two 40 slot 200 amp service panels.. Those panels although not recommended i ran up to 170 amps on both legs(before the upgrade i was pushing it to 210 but i put a fan on the main breaker. Just because i got away with it for over 5 months dont mean you will have same results. 75% is recommended max load on a circuit.. the main breaker was rated at 200 amps. It barely broke a sweat.. Now what i think your mistaken on is your math.. Although its correct your missing that in a 20 slot box, yes it will hold 10 double pole or 20 single pole breakers not 10.. thus still giving you your 48000 watts total.. By the sounds of it your more versed in this area than i.. Please correct me if im wrong Best Regards d57heinz edit found this with little search effort.. http://forums.mikeholt.com/showthread.php?t=109846"Nope, the initial statement is correct. A 200 amp single phase 120/240 v service can provide 200 amps at 240 volts, or it can also provide 400 amps at 120 volts. I didn't mean to imply that it could provide both simultaneously. If we look at this in terms of volt amps: 240v * 200a = 48000 VA 120v * 400a = 48000 VA Either way the capacity is the same." Best Regards d57heinz d57heinz - this was one of the EXACT sources I used in determining my electrical needs. If you look further you'll find the EXACT same thing being said in dozens of electrician forums on the internet. I'm not claiming to be an electrician as are some, but I think the confusion comes from the fact that the 2 poles are 180 degrees out of phase and thus the MAIN does not see 340A simultaneously, but 170A on leg 1 with one phase and 170A on leg2 during the different phase. This is essentially the same as 240V - using 2 x 120V out of phase connections to achieve the 240V. I can also concur that I'm utilizing 32000 watts sustained currently - majority on 120V - divided among the 2 poles/legs. Fluctuations go up to 38000 watts during use of misc items like washer/microwave/gaming machine/hot water heater/air compressor etc.. |
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Well, I guess my farm is defying all logic then.
I'm certainly pulling in over 200A total - all using 120V.
I'll post this to you again. You may not have read it: Say we had a 200 AMP Main Service Panel and every circuit was 240V circuits by using 2 pole breakers... If every circuit was used at it's max [Not recommended if circuits are inside walls and/or conduit], you could have 10 x 20 amp / 240 Volt circuits for a total of 48,000 watts of power. If we used 10 x 20 amp / 120 Volt circuits in a 200 amp Main Service Panel and maxed out each circuit to its full 20 amps each [Not recommended if circuits are inside walls and/or conduit], you would only have 24,000 watts available in power. So, both Main Service Panels were rated for 200 Amps maximum. However, we can utilize the power much better with 240 Volts instead of 120 Volts. Does this make sense now? notlist3d, is right... It sounds like you need an electrician. Trust me on what I'm saying about available watts regarding 240 Volt verses 120 Volt. Your Main Service Panel is rated in Amps and Volts. It's limited for 120V/240V [Either can be used] and it is more than likely limited to 200 amps REGARDLESS of what voltage (120V or 240V) for your circuits in the home. I agree with this statement to a point, but I believe the 200AMP main service is related per pole and not total - So if you approach 200A on either pole you will trip the breaker. If you divide the 120V services up between the poles equally, end result would be the same with 48000 Watt capacity. |
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READ MY POST ABOVE... HE DOES NOT KNOW WHAT HE'S SAYING. Well, I guess my farm is defying all logic then. I'm certainly pulling in over 200A total - all using 120V. |
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Well, after I am been thinking whole night about PSU to fire up S7, I have decided to call up and electrician and get a 240V dedicated circuit installed at my home for my S7 Batch 3 and APW3-12-1600-B2 PSU. Any suggestions?
You will be happy you went this route. If you are getting a 30 amp circuit, you can have 5 x S7's on that one circuit. A 30A 240V circuit takes 2 lines/poles of 120V 30A connections. This would mean its using 60A of 120V. 60A at 120V would also allow for 5 x S7's. Why pay loads of cash to change existing electrical layout if you can avoid it? ROI is already hard enough to achieve no? If you have a 200 AMP Main Service Panel, you are limited to 200 Amps REGARDLESS of whether it's 120 Volt or 240 Volt. A 30 Amp 240 Volt circuit does not take away 60 Amps of 120 Volt. A 30 Amp 240 Volt circuit has taken 30 Amps of 120 Volts [When measured in amps]. The main service panel is limited in "AMPS" not volts! Yes, it's limited in volts in the sense that your main service panel in you home is rated for 120V/240V. Other panels, especially for industrial use, can be rated at much higher voltages. So, again, your main service panel is limited in amps NOT volts. A 30A/240V circuit does not mean 60 amps worth of 120 Volt circuits have been kept from installing in the main service panel. I will say this: 60 amps worth of 120 Volts has the same power (watts) as 30 Amps of 240 Volts. You could have a 30 amp/120 Volt circuit. However, it would not have as many WATTS (POWER) as a 30 amp/240 Volt circuit. The main service panel is not limited with a measurement in watts. It is limited with a measurement in AMPS. Your amount of watts (power) used in the main service panel will be determined by what voltage or voltages used in the circuits wired to the main service panel. It's my understanding that you have a 200 AMP Main, it's providing 2 lines/poles of 120V each with 200 AMP capacity service. It is the combination of the poles that gives you 240V service. |
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Well, after I am been thinking whole night about PSU to fire up S7, I have decided to call up and electrician and get a 240V dedicated circuit installed at my home for my S7 Batch 3 and APW3-12-1600-B2 PSU. Any suggestions?
You will be happy you went this route. If you are getting a 30 amp circuit, you can have 5 x S7's on that one circuit. A 30A 240V circuit takes 2 lines/poles of 120V 30A connections. This would mean its using 60A of 120V. 60A at 120V would also allow for 5 x S7's. Why pay loads of cash to change existing electrical layout if you can avoid it? ROI is already hard enough to achieve no? |
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I hardly ever update Bitmain gear. It has to be a huge feature or flaw huge for me to do it. Ever since I bricked a S3 controller I was not a fan.
I kinda turned into the mindset if it is mining good... i leave it alone.
My thoughts exactly. If anything, I've found that updating bitmain firmware actually creates more problems than it fixes, if it even fixes any at all  In my experience Bitmain Firmware updates have been advantageous. S3 ability to upclock to s3+ for example. S4 firmwares reduced hardware errors and stabilized peak hashrates. S5 firmware - reduced HW errors, fan speed reduction firmware - also gives the added ability of chaining s5's at full hashrate. |
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Wolfen, Thanks for the idea. I never thought of that and I'll definitely keep that in my back pocket of options  However, I'd like to be able to do it properly just so I know how. Why not just log into your remote router and set up port forwards to specific IP and port 80. Then you can just use your external IP address along with a port in your browser and connect to individual units. Something like this EXTERNAL PORT START: 6969 / EXTERNAL PORT END: 6969 - INTERNAL PORT START: 80 / INTERNAL PORT END: 80 - INTERNAL IP ADDRESS 192.168.0.X |
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The s-7 is better then the s-5 And depending on your setup there are mufflers that work.
I disagree. To me 1 x S7 is much louder than 3 x S5's. Even with fan speed reduction to 30%. That doesn't really make sense. Your S7 = 2x fans and S5s = 3x fans, identical fans. Sound is not merely relative to the fan speed and rating. You also must factor into existence the flow of the air and the noise generated from turbulence and or vibration. So you have environmental factors to think about. S5 - has lower restriction of airflow. The fin design of the heatinks allows for air to pass through with less resistance and turbulence. S7 - has compact heatsink design and completely enclosed aluminum housing. This creates a lot of turbulence and resistance. Just like water. What generates more noise, a river without rocks/rapids or one with rocks/rapids? |
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The s-7 is better then the s-5
And depending on your setup there are mufflers that work.
I disagree. To me 1 x S7 is much louder than 3 x S5's. Even with fan speed reduction to 30%. I say everyone has a different pair of ears. The pitch of the s-7 may sound worse to you. But the s-7 is far easier to manage sound wise then the s-5. Just for curiosity sake, I took a decibel meter app (iphone) and tested. 3 x s5's generates decibel ratings of 72 at full hash. 1 x s7 generates decibel ratings of 83 at full hash - auto fan. 1 x s7 generates decibel ratings of 74 at full hash - fan at 30% |
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The s-7 is better then the s-5
And depending on your setup there are mufflers that work.
I disagree. To me 1 x S7 is much louder than 3 x S5's. Even with fan speed reduction to 30%. |
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It took a long time getting here but I'm really happy with my first S7. After 2.5 days of running in the Toomim Bros data center, the speeds are holding steady in spite of really low temps in the DC, and HW errors have been 0.0018% the whole time. I am keeping the fan speed control on auto for now as running at ~40C does not appear to be an issue with hash rate on this box. I have 3 more coming online today or tomorrow so I'm dying to see how they perform. My order/confirm date was 9/6/2015/  I've got 7 of 17 units tested and running. The remainder are waiting on a PSU delivery that comes in today. From my experience, I also don't see a correlation between increased temps and increased hashrate. In fact I'm seeing the opposite, although its rather negligible. Units running 50-55c are producing 4825, while units 45-50c are running 4850. Whoever said these were quiet machines, well I'd have to disagree. These things sound like a jet engine. So only benefit to fan speed reduction I see is decreased volume. at 30% fan speed they are tolerable. In your case having them at a data center, I'd leave the fan at auto. |
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Just for reference, when was your order/paid date?
9/7 |
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I envy you guys. I've got absolutely no shipping info. I called FedEx today so that they could do an "advanced" search. Nada.
For grins I checked the other carriers (in case Bitmain arbitrarily chose a different shipper). Also nothing.
So I ordered on 9/5 with BTC and there's absolutely no sign of shipping whatsoever. I wrote to Bitmain 3 days ago and got no answer.
I guess I should't spaz since Bitmain is supposed to compensate (such as it is). But I'd rather have the hardware in hand and under my control.
One nasty thought is that Bitmain did actually ship, but it's stuck in some customs delay that's not searchable by FedEx. Since I have no tracking info, I would never know and have no ability to resolve it.
Where's that whiskey...
I chose Fedex too. Fedex called today asking for Tax info. My units are in Japan, set to arrive on Monday the 19th. |
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Just checked and my order has made it to Japan which is a different route than most other times which took the miners thru Alaska. But so far so good and UPS says it will be here Monday the 19th.
Package Progress
Osaka, JP
10/16/2015 9:08 P.M.
Arrival Scan
Shenzhen, CN
10/16/2015 7:05 P.M.
Departure Scan
10/16/2015 5:28 P.M.
Export Scan
Bourbon, IN, US
10/15/2015 5:47 P.M.
A UPS My Choice® delivery change was requested for this package. / Delivery to a UPS Access Point™ location is pending.
Shenzhen, CN
10/16/2015 1:15 A.M.
Arrival Scan
10/16/2015 12:59 A.M.
Departure Scan
Shenzhen, CN
10/15/2015 8:54 P.M.
Pickup Scan
10/15/2015 6:48 P.M.
Void Pickup
10/15/2015 6:48 P.M.
Pickup Scan
CN
10/15/2015 3:56 A.M.
Order Processed: Ready for UPS
Thanks for the update. Has your send details status changed or does it still say "Unshipped" on Bitmain site? I'm hoping mine have shipped, but with no send details and having chosen Fedex as courier - I'm in the dark. |
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Kind of the same thing here. I thought a few pages back someone else reported a under weight declared amount and they had to pay part of the shipping due to it? But with what I see it looks like mine was a void pickup at 6:48 but must have been ok at 8:54 when it was scanned again?
Shenzhen, CN
10/15/2015 8:54 P.M.
Pickup Scan
10/15/2015 6:48 P.M.
Void Pickup
10/15/2015 6:48 P.M.
Pickup Scan
CN
10/15/2015 3:56 A.M.
Order Processed: Ready for UPS
Weight:
3.00 KGS
Has your send details on Bitmain been updated? I noticed my send details changed from shipped on 9-28 (which we know as incorrect) to unshipped in the last couple of hours. My order is from 9/7 and via Fedex. I haven't received any notice from Bitmain or Fedex and am assuming my units have still not shipped, but am intrigued by the send details change. |
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I just checked mine. I ordered 09/03/15 at 06:05am. It is marked "shipped."
I too have a UPS account but nothing is shown as being shipped.
Curious, does it have a date marked for shipped date? I just checked my account and it says my order is shipped, but with no tracking number. There is a date placed in the send details of: Date 2015-09-28 00:00:00 No, it just changed to shipped in the past 8 hours - definitely NOT 9-28 and where is the tracking? I hope they don't attempt to compensate based upon this supposed ship date. |
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8.216 BTC Pay:8.216 BTC
Confirm:8.216 BTC Paid
Unshipped
Valid 2015-09-02 07:40:43.0
what will be the comepensation a nice juice coupon?
I'm thinking pretty good chance on coupon. Not sure how nice and juicy it will be. I would hope after they made you guys wait so long it is pretty nice. But knowing it's a business not sure what to expect to see. Now I'm almost rooting for my orders to NOT get shipped by the 10th so that I would be eligible for compensation. On the other hand the total lack of communication about these delays and hashrate issues doesn't inspire much confidence. The bright side is that the decision to not buy Batch 2/3 is rather easy now What r you talking about? Seems we bought batch 2/3 with our batch 1 purchase! Still no movement on my 17 units  |
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People don't realize that they stopped shipping batch 1 because they had this issue with two types of machines (4.86 and 4.66) even in batch 1 as per their email that went to some people. Also, I think that they had a disclaimer for batch 1 that it could be shipped up to 10 days after Sept 30 (or was it 25?). Many people would be upset, though, if they don't ship today or tomorrow.
I hope that what happened is that they noticed that some machines are performing at 4.66, stopped shipping of these machines (and the rest of batch 1), produced more machines, replaced those machines in initial batch 1 that were underperforming with newly produced 4.86 machines, hence some delay in shipping. the underperforming machines from batch 1 might have been renamed "batch 2". the bottom line is that a few days delay in batch shipping 1 might result in those orders having a better chance to be on spec (4.86). This is just my theory.
This may be well and true, however I find it difficult to believe they did not know some of these machines were only hashing at 4.66. I'd think this was noticed during the "Testing" QA phase. If it was unnoticed than QA failed. What I'm really not happy about is the releasing of batch 2/3 and the huge reduction in price. It sounds like there are a great number of folks with unshipped units. I'm in that group with 17 unshipped units myself. That's $2890 less for the 4.86 versions and $4046 less on the 4.66 versions. You kidding me? That's what pre-paying early adopters are awarded? Technically we are supposed to get our units shipped out 5 days prior to batch 2 shipping (before they can be considered late - and what happens if they are late?), but 5 days of mining doesn't even cover half of the savings you'd get by simply sitting out of batch 1. I really think Bitmain shouldn't be selling new batches before they have even shipped out the first. Priorities, let's take care of the customers that have already paid before raking in new moneys... Then you also wouldn't be in the predicament of having paid customers overly upset about having no product while seeing the stuff they have paid for already but not received (hell not even shipped out) at lower prices. |
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