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Actually given the same load attached to a cable, the longer the cable, the more the resistance, the greater the voltage drop across the cable (lost as heat), but the current drops. Since current drops, an infinitely long cable would have all the voltage drop but no current and would be cool.
No, current doesn't drop unless you're hooked up to a resistor. A power supply is (close to) a constant power device, so current will increase in proportion to the voltage drop. It will be pretty minor though. Cable heating won't really change, since while you'll have 3.3x the voltage drop with a 10ft vs 3ft cable and essentially the same current and will therefore dissipate 3.3x more power, the cable also has 3.3x more surface area to dissipate heat. That's why wire gauges are rated for a certain current without regard for length. You're wrong! Current will drop regardless of load if cable is long enough. The wire itself becomes a big resistor. Even if the supply was ideal, there would be little current getting to the load (or going through the cable) if the cable was long enough. Cable resistance approaches infinity as length increases. Of course, the difference between 3 to 10 feet is insignificant. No, I am not. Current will rise as cable length rises and voltage at the load will decrease until either the input current or input voltage protection of the PSU trips at which point the PSU will shut down and current will go to (almost) 0. For an S4 pulling 1400W (with a PF=1) from a 240V line and assuming the PSU trips off at 100V, you'd be pulling 14A and could thus use up to a 600m long 14 gauge cable. IE, preposterously long. All i know is i had a heavy gauge 10ft cable on 3 avalons and the ends were getting reallllly hot. Changed over to a heavy gauge 3ft cable and no problems. JT |
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Unfortunately, bitmain said (in this thread I think) that the upgrade kits have been discontinued! I'd like them to go back on their word, but seems unlikely. Damn the luck. Oh well. JT |
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Here's what pisses me off:
Bitmain says the following regarding their S4, "Power line not included. You may look for one line with no less than 16A in your local market."
Well, I've searched the WORLD WIDE WEB for a C14 Power cord and cannot find one rated higher than 15 amps.
WTF?
Pretty sure they made a typo and meant 16Awg. If you're running on 240v you need an 18AWG cord, ND if you're running 120v use a 14AWG cord. I bought this one: Amazon.com: Tripp Lite Heavy Duty Power Cord, 16A,14AWG (NEMA 5-15P to IEC-320-C15) 8-ft.(P019-008): Electronics http://www.amazon.com/gp/product/B0091F8GP6/#It's a replacement for a heavy duty server room style UPS. When i got it, the packing slip said 16A but the packaging the cord was in said 15A. Anyway until I received that my S4 ran fine for 2 days with a standard el-cheap-o 10A PC power cord that I had laying around in a box in my closet, so I wouldn't stress about it. I have seen the one you purchased on Amazon. It is a kettle cord. A C-15 made to fit a C-16 connector. It is used for higher amperage appliances. It also has a valley in the C16 connect which does not allow a C-13 cord to plug into it. However, a C-15 or C1-3 cord can plug into a C-14 connect. The S4 has a C-14 connect. I'm just going to purchase Trip-Lite 14 AWG C13 10 feet cord for the S4. Uses the same gauge wire as the Trip-Lite C-15 8 feet cord you purchased from Amazon. Thanks for your description. David Something else yall need to remember is the length of the cord. A 10 ft cord will get hotter and pull more amps than a 3 foot cord. All my miner power cables are 3 ft or less with an iso bar behind them. JT |
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These block times are ridiculous. 15 hour and going..
The average over the last 10 blocks (including this one) is 4:40, which is well below the expected time at present. Good times the last couple days for sure. This long block may be my fault i upgraded a couple of my S1's and as soon as i plugged them in we hit this 15 hour block.  JT Were did you get your upgrades? I have 7 S1's on the way from ebay and was thinking about upgrading them. I ordered them from BITMAIN before they sold out. They should be making more soon. Hope they do anyway i got 3 more i wanna upgrade. Seems they have some pretty cool products coming out soon. https://www.bitmaintech.com/productDetail.htm?pid=0002014081313175081722f1GeUO063F JT |
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These block times are ridiculous. 15 hour and going..
The average over the last 10 blocks (including this one) is 4:40, which is well below the expected time at present. Good times the last couple days for sure. This long block may be my fault i upgraded a couple of my S1's and as soon as i plugged them in we hit this 15 hour block. JT |
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well good to be back 2 normal  127% for the last 30 days. Yes, back to normal indeed. As Ice Cube say "Today was a Good Day" JT |
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Why Slush no talk on his own pools forums....... Let alone update his own website with update to date information (half of its years old) Lol. I alsp think Ghash is going downhill. I used to never have problems with them.. no everytime i go to log in..... http://imgur.com/8AdA7Rwthis is starting to happen on like all of my computers and different networks. This is usually a sign of MitM attacks. PS. Dont get ur hopes up to much with the luck. I've switched some miners myself due to lack of reward for my hashpower.... and lack of blocks. I'll be back soon. once i see the lucks gotten better.... hopefully it doesnt stay like this when the diff rises again....its starting to seem like it. The forum got too out of control same questions over and over and over. He does update the facebook page https://www.facebook.com/MiningBitcoinCz?ref=br_tfJT |
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Finaly cool enough outside to be able to get my server room below 78 Degrees.  Miners and servers are very happy and it seems our luck is turning around. JT |
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Just couldn't help myself. Bazinga ahaha.
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I think some people spend too much time with their miners and not enough time having fun.
JT
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May I just say, I am of that generation where we used to do calculus on paper and were banned (in exams) from using calculators. in the same breath, the link to the site does not reveal how they compute their numbers, simply plug in a few numbers and you have a result ... ! As such, I still am at a loss as to how pool luck is calcullated!
If you want a quick check, you can look at Eligius. http://eligius.st/~wizkid057/newstats/blocks.phpThe luck number listed for each block is just Difficulty/shares You can also look at Organ of Corti's blog. http://organofcorti.blogspot.com.au/"Luck" is the usual difficulty 1 equivalent shares per round / mining difficulty, or (equivalently) accepted shares / expected shares. Right, I shall cease asking difficult questions ..... that's it. Pekatete asked a simple question no need for you to Once again start a fuss. Yes im adding my 2 cents. JT Whatever... I think you just enjoy trying to criticize someone you don't like for whatever reason. |
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Ok who stepped on the leprechaun and his 4 leaf clover then smashed the lady bug with a horse shoe? Come on fess up.
JT
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Well, we are now at zero luck. I think that says it all. On a rural road a state trooper pulled this farmer over and said: "Sir, do you realize your wife fell out of the car several miles back?" To which the farmer replied: "Thank God, I thought I had gone deaf!" And the pool hoppers are running for the hills. Down to 7.3 PH. And i too have never seen the luck at Zero. Kind of a hollow feeling.  JT I guess this will sort out the hoppers from the stoppers. More power to them my miners have been parked here since march and im not moving them. Just more payout for me that's all. JT |
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Well, we are now at zero luck. I think that says it all. On a rural road a state trooper pulled this farmer over and said: "Sir, do you realize your wife fell out of the car several miles back?" To which the farmer replied: "Thank God, I thought I had gone deaf!" And the pool hoppers are running for the hills. Down to 7.3 PH. And i too have never seen the luck at Zero. Kind of a hollow feeling. JT |
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Some updates on the site.
You can now set the minimum difficulty for a worker (and having tested it, it works!).
And what a bummer about block 325164 ... I was already counting my chickens!
Hopefully not sounding stupid but what is that? JT |
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GHASH found 12 blocks in less than an hour. 8 of which were in a matter of seconds.
They have 58 PH we have 8 If you like lower payouts cool. JT |
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That is a person's opinion. Simply put. I also know of someone else who said, "Judge not according to the appearance, but judge righteous judgement." Also, look at the content. Does it look like I was shouting AT someone based on the CONTENT? In fact, I actually mentioned we cannot see each others face or disposition to LET THEM KNOW I was not angry or ANYTHING LIKE THAT while using all caps. If you think I'm shouting now when I use caps, it sounds like you are being a little picky, kkurtmann. Just being honest! I've already told you I use caps for EMPHASIS not shouting. I don't see a problem with using caps if I have already given someone the heads up. It is rude thats all we are saying. And its not a personal opinion its the consensus of the internet. JT |
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So about a week ago we were at 6.6ph and my payouts were great. Now at 8.1ph and payouts have been cut by almost a 1/4. i understand new faster miners are coming out every day but a peta hash is alllllot of power added in just over a week. Did someone hit the Bitcoin lottery or something.
JT
1 guy rented 500 TH/s in the cloud and put it on here. Damn 500 TH wonder if at this price and diff if that is even profitable. JT OK 500 TH cloud mining cheapest i could find was around $295,000 for one year. At 500 TH at the current Price Diff etc thats around $76,000 a month. 12 months thats around $900,000 (minus diff increases etc) so yeah it works. JT |
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So about a week ago we were at 6.6ph and my payouts were great. Now at 8.1ph and payouts have been cut by almost a 1/4. i understand new faster miners are coming out every day but a peta hash is alllllot of power added in just over a week. Did someone hit the Bitcoin lottery or something.
JT
1 guy rented 500 TH/s in the cloud and put it on here. Damn 500 TH wonder if at this price and diff if that is even profitable. JT |
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