C1 Batch2 opens sale now, Cooling Kits are included  Does it come with the coolant as well? If not you might want to correct the page since it says it's included. Is the cooling kit still manufactured by syscooling or is it a different manufacturer? Yes, this really needs to be clarified. |
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Yeah, that's no good. I should have realized just by looking at the picture, it has 1 Green (ground) 1 Black (120v) and 1 white (neutral).
So you'll only be sending 120v to the S4, and it will consume 11.66a instead of 5.83a. No good. A PDU outputs 240v, not 120v.
I'd seriously consider returning everything you bought, and replacing your L14-30 with good quality (Hubble) L6-30R sockets. Generally what you'll find in hardware stores aren't the best quality. You could also consider making your own wiring harness for the L14-30 instead of buying an extension or a PDU.
I agree with you 100% That means I ought to exchange the 100 feet of 10/3 wire I purchased for 100 feet of 10/2 as well? I believe the L6-30R socket only has 3 terminals... correct? I can save about $20 right there. If they allow returning the wire, yes. You only need 10/2. If they won't take the wire back you can still use the 10/3, you just won't connect the white wire to anything. It's still in its packaging. Has not been opened yet. I decided to keep the 10/3 in case I or the next owner of my house needs options to make changes. I just will not use the white wire. You've been a BIG help. Thank you for your time and professionalism! My pleasure, dmwardjr. Feel free to PM me if you have any more questions. |
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Yeah, that's no good. I should have realized just by looking at the picture, it has 1 Green (ground) 1 Black (120v) and 1 white (neutral).
So you'll only be sending 120v to the S4, and it will consume 11.66a instead of 5.83a. No good. A PDU outputs 240v, not 120v.
I'd seriously consider returning everything you bought, and replacing your L14-30 with good quality (Hubble) L6-30R sockets. Generally what you'll find in hardware stores aren't the best quality. You could also consider making your own wiring harness for the L14-30 instead of buying an extension or a PDU.
I agree with you 100% That means I ought to exchange the 100 feet of 10/3 wire I purchased for 100 feet of 10/2 as well? I believe the L6-30R socket only has 3 terminals... correct? I can save about $20 right there. If they allow returning the wire, yes. You only need 10/2. If they won't take the wire back you can still use the 10/3, you just won't connect the white wire to anything. |
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Hmm, I was thinking about ordering another S4. Now I'm considering 2x SP20s. Do the SP20s ship out same day?
Edit: Sorry, reading fail. Site says shipments start on Nov. 18th.
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Yeah, that's no good. I should have realized just by looking at the picture, it has 1 green (ground) 1 black (120v) and 1 white (neutral). If it were 240v it would be 1 black (120v 1 red (120v) and 1 green (ground).
So you'll only be sending 120v to the S4, and it will consume 11.66a instead of 5.83a. No good. A PDU outputs 240v, not 120v.
I'd seriously consider returning everything you bought, and replacing your L14-30 with good quality (Hubble) L6-30R sockets. Generally what you'll find in hardware stores aren't the best quality. You could also consider making your own wiring harness for the L14-30 instead of buying an extension or a PDU.
To clarify, a PDU will take the input voltage (generally 208v - 250v) and output the same voltage among all it's outputs.
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Here's where I was getting confused:
When Amazon's product description told me it was converting 240 volt circuit into 2 or 6 120 volt circuits, I was doing my math for wattage based off 120 volts instead of 240 volts for a 30 AMP circuit.
Another good thing is I will be able to run more S4's than I previously determined.
Post the link to the extension on amazon. It's possible that you will only get 120v at the plug, a properly wire L14-30 has one ground 2 120v legs and a neutral. If it's sending only one 120v to the 5-15R you won't be using 240v and you would be limited to 2x S4s per 30A outlet. You need to make sure you're getting 240v to the S4s. |
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Might want to refrain from including the images in your quotes, these pages are getting stretched LOL. Yeah, that's the extension. Unfortunately I was wrong, that isn't a L6-30P connector. Looks like a L14-30 or something. Do they have a L6-30P version? That's what you need. You might want to take a look here: https://en.wikipedia.org/wiki/NEMA_connectorShould give you a good idea. So, the L14-30 that is 120/240 is not good enough? It has to be just 240? Not 120/240? Remember I'm posting from a cell LOL... The original socket you posted:  Should work. You'd only use 3 of the 4 pins, one ground two live. Just make sure the extension is L14-30P. 125/250 doesn't matter, it just means it can legally be wired for both. I'd try to find L6-30R + L6-30P if you can, though. |
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Might want to refrain from including the images in your quotes, these pages are getting stretched LOL. Yeah, that's the extension. Unfortunately I was wrong, that isn't a L6-30P connector. Looks like a L14-30 or something. Do they have a L6-30P version? That's what you need. You might want to take a look here: https://en.wikipedia.org/wiki/NEMA_connectorShould give you a good idea. |
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Thanks I appreciate it. I was not expecting the card to corrupt. Pulled it out it is a class 4 no wonder why it did not last long. Does anyone have a direct link to the S4 complete image??
My SD card corrupted and I need to reimage one fast.
Thanks
If nobody else posts one before I can rip one from one of my S4s for you tomorrow. I don't think class is necessarily a sign of quality, only speed. Brand name would be more important for quality. If I remember, S4s use kingston, but who knows if they're genuine or not. The problem was finding 30 AMP receptacle for a regular IEC-320-C13 3 prong cord to plug into, which is normally used for 15 AMP or 20 AMP circuit. I could not find one. I don't think they even make one. So, I decided to get an L14-30P 4 prong circular receptacle that will push 30 AMPS so that two S4's can be put on one circuit.
One S4 is 1400 watts. Two S4's would be 2800 watts. 240 volts or 120 volts is not what is important. The amperage is what is important in this application. Each AMP can push 120 watts of power. 1400 watts divided by 120 watts per amp = 11.6666667 AMPS for one S4. 2800 watts divided by 120 watts per amp = 23.3333333 AMPS for two S4's.
With a 30 AMP circuit, yes, this would leave 6.6666666 AMPS remaining for the circuit if I was powering two S4's. However, I do not want to push the circuit and the wiring to its limits. I want to keep the heat down and have less chance of tripping the breaker. I have approximately 800 watts per setup of two S3's with one 860 watt PSU. Just because it can push 860 does not mean I'm using 860. Theoretically, I could have 3 sets of S3's (6 of them) with three (3) 800 watt PSU's on a 20 AMP circuit. 800 watts x 3 = 2400 watts. A 20 AMP circuit x 120 watts per AMP is 2400 watts. That would be pushing that 20 AMP circuit to its max which would heat up the wiring more.
David
I'm on my cell so I didn't read your whole post and I'm going to be brief as posting with it is annoying. You're making an error. You are running 240v to your outlets, right? Just to be sure. 1A on 120v = 120w 1A on 240v = 240w Thus: 1 S4 on 120v = 1400w / 120v = 11.66a 1 S4 on 240v = 1400w / 240v = 5.83a Big difference. You're doubling your capacity by using 240v vs 120v. IE only 2x S4 if 30a @ 120v, but 4x S4 if 30a @240v. 30a derated by 20% = 24a usable safely. 4 x 5.83a = 23.33a Also, while I'm not endorsing this, I did all of my own electrical work and know that I used the best quality equipment. I've run a 30a 240v circuit 24/7 at 30a (7200w) without any issues. The wire was warm, but still well in what I would consider safe. Continually maxing the line out like that would likely wear the breaker out faster, though. Again, I'm not saying people should max out their amperage ratings, stick to -20%. If you believe this would be better, please let me know: Yes, that would be perfect. When you are no longer on your phone and have an opportunity to answer at your computer, please answer the following questions: Are you from the U.S.? If so, what outlet do I need and what power strip do I need to power four S4's on on 240V/30AMP circuit? Already did: Prelude,
Are you from the United States?
I need to know what outlet I need and what special extension cord I need in the U.S. to plug in four S4's into a 240 Volt outlet?
Canada, but our electrical specs are the same. What you posted was perfect, especially the 6 outlet extension that you removed. NEMA L6-30 is the connector style you want. You should also look into used 240v 30a server PDUs on ebay. That would be the best option, but possibly a little more costly. NEMA L6-30 Socket on wall:   Power strip (PDU = Power Distribution Unit): http://www.amazon.com/Tripp-Lite-PDU1230-L6-30P-Horizontal/dp/B0007YG85A/ref=sr_1_1?ie=UTF8&qid=1415684755&sr=8-1&keywords=240v+30a+pduOr similar to that PDU. Any 240v 30a PDU will come with the right L6-30 connector. You'll need special wires from the PDU to PSU, though. About 5$ each. If not, that extension you posted and removed earlier (with 6 outlets) would be perfect also. For my own setup, I splurged a bit when mining was more profitable and got some of these: http://www.amazon.com/Tripp-Lite-PDUMH30HV-Metered-Horizontal/dp/B0053YIUPK/ref=sr_1_3?ie=UTF8&qid=1415684970&sr=8-3&keywords=240v+30a+pdu  Think I paid $250 each on sale. I like being able to monitor their loads in real time. I generally keep them under 26-27a continuous. Wires needed for PSUs if you use a PDU: http://www.amazon.com/C2G-Computer-Extension-IEC320C13-IEC320C14/dp/B000YFBOV0/ref=sr_1_7?ie=UTF8&qid=1415685291&sr=8-7&keywords=c13+to+c14 So, TL;DR... PDU is the best way to go, but more expensive. Your extensions would do just fine. |
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For those with S4 coupons, are they $50 or $200 coupons?
200 good to the 15th. Sweet, I thought they all expired on the 25th of October. If you (or anybody) want to hook a brother up, my bitmain ID = Prelude Would be muchos appreciated. |
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Does anyone have a direct link to the S4 complete image??
My SD card corrupted and I need to reimage one fast.
Thanks
If nobody else posts one before I can rip one from one of my S4s for you tomorrow. |
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Prelude,
Are you from the United States?
I need to know what outlet I need and what special extension cord I need in the U.S. to plug in four S4's into a 240 Volt outlet?
Canada, but our electrical specs are the same. What you posted was perfect, especially the 6 outlet extension that you removed. NEMA L6-30 is the connector style you want. You should also look into used 240v 30a server PDUs on ebay. That would be the best option, but possibly a little more costly. |
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The problem was finding 30 AMP receptacle for a regular IEC-320-C13 3 prong cord to plug into, which is normally used for 15 AMP or 20 AMP circuit. I could not find one. I don't think they even make one. So, I decided to get an L14-30P 4 prong circular receptacle that will push 30 AMPS so that two S4's can be put on one circuit.
One S4 is 1400 watts. Two S4's would be 2800 watts. 240 volts or 120 volts is not what is important. The amperage is what is important in this application. Each AMP can push 120 watts of power. 1400 watts divided by 120 watts per amp = 11.6666667 AMPS for one S4. 2800 watts divided by 120 watts per amp = 23.3333333 AMPS for two S4's.
With a 30 AMP circuit, yes, this would leave 6.6666666 AMPS remaining for the circuit if I was powering two S4's. However, I do not want to push the circuit and the wiring to its limits. I want to keep the heat down and have less chance of tripping the breaker. I have approximately 800 watts per setup of two S3's with one 860 watt PSU. Just because it can push 860 does not mean I'm using 860. Theoretically, I could have 3 sets of S3's (6 of them) with three (3) 800 watt PSU's on a 20 AMP circuit. 800 watts x 3 = 2400 watts. A 20 AMP circuit x 120 watts per AMP is 2400 watts. That would be pushing that 20 AMP circuit to its max which would heat up the wiring more.
David
I'm on my cell so I didn't read your whole post and I'm going to be brief as posting with it is annoying. You're making an error. You are running 240v to your outlets, right? Just to be sure. 1A on 120v = 120w 1A on 240v = 240w Thus: 1 S4 on 120v = 1400w / 120v = 11.66a 1 S4 on 240v = 1400w / 240v = 5.83a Big difference. You're doubling your capacity by using 240v vs 120v. IE only 2x S4 if 30a @ 120v, but 4x S4 if 30a @240v. 30a derated by 20% = 24a usable safely. 4 x 5.83a = 23.33a Also, while I'm not endorsing this, I did all of my own electrical work and know that I used the best quality equipment. I've run a 30a 240v circuit 24/7 at 30a (7200w) without any issues. The wire was warm, but still well in what I would consider safe. Continually maxing the line out like that would likely wear the breaker out faster, though. Again, I'm not saying people should max out their amperage ratings, stick to -20%. If you believe this would be better, please let me know: Yes, that would be perfect. |
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Umm.. I'm not going to bother looking, but I'm pretty sure that screenshot is Wolf0's.  |
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For those with S4 coupons, are they $50 or $200 coupons?
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That 30a breaker will be a lot harder to trip if you're only using ~2800w out of 7200w in the event of a fault with one of the S4s. I assume you mean ~1400W instead of ~2800? And yes, I concur with the rest of the content of your post. [dmwardjr]- I didn't realize you were operating at 240V, made the assumption that you were operating at 120V. Disregard my comment about dedicating a single circuit for one S4 Sorry, I wasn't clear. I meant ~2800w, considering 2x S4s per circuit with each drawing ~1400w. |
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You're under-utilizing those circuits. 240v x 30a = 7200w 7200w derated by 20% for safety = 5760w of usable power per circuit. You could power 4x S4s per circuit, without issue. In my opinion it would also be safer in the event of a short or a blown PSU. That 30a breaker will be a lot harder to trip if you're only using ~2800w out of 7200w in the event of a fault with one of the S4s. |
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Sweet, back to back blocks!  Edit: And only 1 second apart..  CoinCadence is showing them as 30s apart. Any idea why is it showing as 0.00% luck? Lol, they are to close together for my luck calculator to handle..... Definitely a new P2Pool record... I'll figure it out manually when I have some time. Expected time to block ~ 15 hours Actual time to block varies by what node you look at: Coin Cadence recoded them 30 seconds apart BlockChain has them 1:53 apart Weird, wonder why my local node shows them 1 second apart?  |
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Sweet, back to back blocks! Edit: And only 1 second apart.. |
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