Topic: ANTMINER S4 Discussion and Support Thread - page 99. (Read 301481 times)

WOW

This means I can have 18 S3's instead of only 16 I have now [cause I can run 18 S3's on one 240V/30 AMP circuit]; and 21 S4's on 4 240V/30 AMP circuits with PSU's or the special extension cords I showed you.  This would leave me 50 AMPs for everything else in the house.

That would be 50 Th/s

sweeeeeeeeeeet

Sorry, I'm drooling at the mouth over here right now.

Tell me something:

The power company will see this "wattage" and charge me based on that wattage instead of amperage?

Yes, I think that is right.  Cause it is based on kW hours not amperage.  Excuse me, I'm just thinking out loud.

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.

ditto.
My first 4 Ants were bought on Amazon via Jones Gear back in March for minimal markup over direct from Bitmain but gave nice fuzzy warm feeling of Buyers Protection (um, seriously burned by Joshoua Zipkin / AMT Miners). However asy my mined BTC rose said what the heck and went direct. Now 24 various Ants of all models 'cept the USB toys later gotta say, Bitmain is the only way to go.

Spondoolies also good but are hairdryer loud by nature.

I would like to use the L14-30 because I already purchased them.  I have one here at the house that I purchased from Lowes.  The other 3 are on the way from Amazon.

Local Ace or True value hardware as well as Home Depot, Lowes should have them. From McMaster, these are very nice http://www.mcmaster.com/#7174k18/=ujkq67
matching plug http://www.mcmaster.com/#7162k53/=ujkru9

No problem. Good luck!

Okay,

Thank you very much!

Unfortunately, I already purchased the L14-30P outlets

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.

So, the L14-30 that is 120/240 is not good enough?

It has to be just 240?

Not 120/240?

by the way, this is the 240 Volt L14-30 to 6 120V circuits I had up earlier but deleted:

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_connector

Should give you a good idea.

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.


Already did:


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+pdu

Or 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.

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?

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.

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. 

If nobody else posts one before I can rip one from one of my S4s for you tomorrow.

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.

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%.


Yes, that would be perfect.

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?

Does anyone have a direct link to the S4 complete image??
My SD card corrupted and I need to reimage one fast.
Thanks

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.

The way I feel we need to look at it is this way:

Push your circuits no more than 75 to 80 percent [if you can help it] to keep from heating up your inside wiring, especially, in a residence.  I have 240 Volts coming into the house to the main breaker.  The main breaker panel is 200 AMPS.  However, we split up our amperage in our residence/business with breakers.  We don't have all 200 AMPS on one circuit in our house.  We split it up according to what is required for the equipment/appliances.  

I have a choice, run multiple 14/2 wiring with 15 AMP breakers having only one 15 AMP circuit for each S4.  Doing so would require me to spend more money on wire and more time with labor to run the wiring and wire up each receptacle.  Why?  If I want eight S4's, that would mean eight runs of 14/2 wiring going into eight 15 AMP receptacles.  Lot more money and labor.

A 20 AMP circuit with 12/2 wiring capable of 2400 watts leaves me 1000 watts of un-used power.  That did not seem like the right thing to do.  It was basically the same as a 15 AMP circuit with the same problem of running more wiring and hooking up more receptacles.  20 AMPS was not able to power two S4's.

A 30 AMP circuit with the potential of running 3600 watts (30 AMPS x 120 watts per amp).  Two S4's [2800 watts] from 3600 would leave 800 watts left over instead of 1000 watts like it would with a 20 AMP circuit.  I'm using 77% of my amperage in a 30 AMP circuit with two S4's on that 30 AMP circuit.  Also, I'm spending less money on wiring and wiring up fewer receptacles at the wall [less labor].

The voltage did not matter in this case.  The S4 is made for 120 volt or 240 volt circuit AT 30 AMPS.  So, what mattered most was the amperage.  What also mattered was how much money I spend on wiring and receptacles and how much labor I expend to install the wiring and receptacles.

It made more sense to me to have four (4) runs of 10 AWG wiring going to four (4) 30 AMP receptacles.  Then, have four (4) cords to split from a 30 AMP circular plug in to two 15/20 AMP 3 prong female plug in's going in each 30 AMP receptacle.  That would give me a total of eight 15/20 AMP 3 prong female plug in's to plug in eight  S4's.  

The splitter cord I'm purchasing will also break down the voltage from 240 to 120.  How?  It will use the Red/White for one 15 AMP/120 Volt circuit and the Black/White for the other 15 AMP/120 Volt Circuit.

As for waste of amperage or wattage: there is very little waste here.  We have to consider what we are willing to spend on wiring and what is available at the other end of the wiring to plug our equipment into.  We also need to consider the amount of labor involved when installing the wiring and plug (receptacle) we plug into.  Unfortunately, there is no 30 AMP IEC-C13 3 prong outlet.  The max it goes to is 20 AMP; that I could find in the U.S.A.  If we go anything over 20 AMP in the U.S.A. we have to use a specialized outlet other than C13 3 prong outlet.

30 AMPS was the OBVIOUS choice for two (2) S4's to run on.  Since it is the obvious amperage for two (2) S4's to run on, I needed to look at what 30 AMP outlets were available for me to use.  These are what is available in the U.S.A. :  http://www.lowes.com/Electrical/Electrical-Outlets-Adapters/Electrical-Outlets/_/N-1z0yt2j/pl?Ns=p_product_qty_sales_dollar|1#!&N%5B%5D=1z0v8l3&N%5B%5D=1z0yt2j

Now, if you see what is available, you understand the dilemma I was in.  I needed to get something to break down to a regular 3 prong C13 plug.  That's when I found the following:http://www.amazon.com/gp/product/B000IUHA28/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1  That was the ticket.

So, I will use 10/3 wiring to a 30 AMP receptacle to split with a special cord to power two S4's.  That was the cheapest, easiest and safest way to do it in my opinion.  However, I'm open to other opinions.

If you say, "Amperage or wattage is being wasted," actually it's very little compared to 20 AMP circuit.  Yes, I could have had multiple 15 AMP circuits.  However, they would have powered only one S4 and I would have spent more time with labor as well as more money on multiple runs of wiring to those receptacles.

David