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1  Other / Off-topic / Re: Mini Rig announcement by Butterfly Labs - 25gh/s on: May 10, 2012, 07:13:59 PM
If bitcoins completely disappeared would these machines have any resale value? I don't understand why everyone argues that they will not pay off even if it takes 2 years to break even, you still have the machine, say it is worth $5k after two years thats a 16% return. I may not completely understand the risks but sounds solid to me.
2  Other / Beginners & Help / Re: 220v Help on: February 15, 2012, 03:54:34 PM
So, locking CS8265C is not a type of US outlet, it says it uses a 50 amp outlets, plugs and I assume breaker?
Maybe use this: http://www.amazon.com/HUBBELL-CS8264C-Connector-250v-Female/dp/B002FYD0HY
its more expensive than the PDU haha

It is a California specific plug.  CA felt the NEMA L6 connector wasn't secure enough so they mandated their own connector.  I wish I was kidding.  Technically it could be used anywhere (the electricity doesn't care) however if it is up to your local code is another story. 

If it were me I wouldn't have a problem using the CS8265C. 

CS8265C plug -> CS8265C  outlet -> 6/2 (yeah that's 6 gauge wire, "real fun" to work with) -> 50A breaker.

Also with 50A personally I would want a GFCI.

I think you may find the cost of breakers, wiring, outlets, etc all increase when dealing with 50A simply because they aren't used that much.

So maybe I should just change it to a 30AMP, everything would be cheaper and easier, and I would still have about 10k watts which should be sufficient for a while. I think the whole issue was that I already had a 40amp spear breaker ready to go so I wanted to work around it but seems like more work than its worth..
As far as breakers go I notice the prices vary a lot and there are tons to choose from, I will be looking to get a 30-amp double and a 30amp single. Anything special I should look for?
3  Other / Beginners & Help / Re: 220v Help on: February 15, 2012, 02:20:41 PM
I suppose I need to look for the best price on the hard wired one, or could I just cut the plug off the plug one.
4  Other / Beginners & Help / Re: 220v Help on: February 15, 2012, 02:10:50 PM
So, locking CS8265C is not a type of US outlet, it says it uses a 50 amp outlets, plugs and I assume breaker?
Maybe use this: http://www.amazon.com/HUBBELL-CS8264C-Connector-250v-Female/dp/B002FYD0HY
its more expensive than the PDU haha
5  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 09:44:29 PM
So finally found some info on your 40A PDU.  

http://h18000.www1.hp.com/products/quickspecs/11041_na/11041_na.HTML#Modular PDU Family Information

Looks like it is designed to be hardwired into the premises.  So you could use 40A breaker to hard wire this 40A PDU (provides) 4 C20 outlets (just google C20) which you could then expand to multiple PDUs with C19 cables as you likely will need more than 4 outlets.  

Never seen that before.  

That is why I liked the 40A PDU so much because for $70 it includes the main box and the expandable PDUs which have 4 plugs each. So on that I could run 34A x 220? 7480
Also I could use the single open slot and put in a 30A for 3600, also there is already a 15A with one outlet attached that I will be using as well, I suppose I could make it bigger if needed.
The largest single breaker I have is 20A, do breaker boxes have limits, or should I be able to use 30A singles

Now my only concern is surge protection, the only thing I could think of is a whole house protector.


6  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 07:50:31 PM
Maybe Instead of trying to figure this out some strange way to do this, I just need to know the answer to this question.

If you had a breaker box with 3 open slots, 2 slots are side by side and you wanted to draw as much power possible and as efficiently as possible from those 3 circuits, how would you do this?

7  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 05:55:40 PM
Thanks for the write up, I am very confident in the install now, I have installed a regular outlet before and I have looked in my breaker box so everything makes perfect sense, however depending on the cost I still may hire an electrician. The main breakers for my box are located outside the house so luckly I would not have the live wires coming into the box (correct?) However, I would have to run in and out of the house a lot to switch it on and off.

In regards to the plugs, this seems to be the confusing thing at this point. So I could not use a 50A outlet with a 40A breaker?
I have no problem installing a 50A breaker, I would just need to look for a 50A PDU. But that HP unit looked great for the price and I already have a 40A breaker.

I was looking at the picture of the PDU and it has a plug, not hard wired, I dont understand if the outlets dont exist why they would do that...
8  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 02:14:04 PM
Its quite simple to wire a 30 amp circuit.  If you use the above pdus, they use a 3 plug/wire outlet.  You use a black/red/white wire setup.  You hook the black and red wires up to the 30 amp circuit break, each wire to its own screw.  The white wire goes to the neutral bar which is where you'll see all of the other white wires hooked up.  Turn off the main breaker, add each wire to its respective screw.  Make sure everything is clear.  Keeping one arm/hand at your side, turn on the breaker with your other hand.  Never use two hands because it forms a path for current to pass through the heart .  Using one hand is safer.

Yes I realize the process is very simple, and will probably end up doing it myself, I have a power line tester if it shows no power than what could possibly go wrong, I have no idea. One other question, I have a 40amp breaker, the power strip supports 26amp so I need to have two outlets, it plugs into " NEMA L6-30 plug" I assume like a dryer outlet. I don't see why not but, can I hookup two outlets to that 40amp breaker which would allow me to use two of the distribution units, or maybe I should just look for one that supports 40amps and do one plug


BZZT.  FAIL.  

No seriously respect electricity.  Wire according to the code.

I will compose some details and update the post.


I found this which supports 40amps, I assume it would be a better alternative on one plug:
http://www.dectrader.com/417582-001-New-HP-40A-high-voltage-power-distribution-unit-PDU-core-assembly-200VAC-240VAC-47-63Hz-40A-Rack-mount-box-with-field-wire-input-terminals-and-four-C19-F-connectors-for-power-strips-stick.html?utm_source=googlebase&utm_medium=shopping&utm_campaign=parts
9  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 02:13:07 PM
I have a power line tester if it shows no power than what could possibly go wrong

Famous last words. Please be careful and treat every wire as if it's live, no matter what testers tell you.

I feel like if I knew what could really go wrong than I probably would hire someone to do it, so if the breaker goes off there is a possibility power could somehow reach through? If so I probably will hire an electrician.
10  Other / Beginners & Help / Re: 220v Help on: February 14, 2012, 01:38:15 PM
Its quite simple to wire a 30 amp circuit.  If you use the above pdus, they use a 3 plug/wire outlet.  You use a black/red/white wire setup.  You hook the black and red wires up to the 30 amp circuit break, each wire to its own screw.  The white wire goes to the neutral bar which is where you'll see all of the other white wires hooked up.  Turn off the main breaker, add each wire to its respective screw.  Make sure everything is clear.  Keeping one arm/hand at your side, turn on the breaker with your other hand.  Never use two hands because it forms a path for current to pass through the heart .  Using one hand is safer.

Yes I realize the process is very simple, and will probably end up doing it myself, I have a power line tester if it shows no power than what could possibly go wrong, I have no idea. One other question, I have a 40amp breaker, the power strip supports 26amp so I need to have two outlets, it plugs into " NEMA L6-30 plug" I assume like a dryer outlet. I don't see why not but, can I hookup two outlets to that 40amp breaker which would allow me to use two of the distribution units, or maybe I should just look for one that supports 40amps and do one plug
11  Other / Beginners & Help / Re: 220v Help on: February 13, 2012, 02:00:36 PM

Thanks! That power strip is exactly what I am looking for

For anyone else that is interested:
"APC model AP9571.  There are a lot of them on ebay for ~$50.  Very solidly built.  It is 30A so it uses NEMA L6-30P plug.  You likely want 30A unit anyways because PDUs are derated 20% to comply with electrical code. 30A unit has 2x12A breakers = 24A usable.  20A unit has 2x8A breakers = 16A usable.   Seems there are more used 30A units then 20A units likely because that is what most datacenters use.

Best part.  The cable is very thick and 12 feet long.  No worries about overheating, or damaging the insulation.

specs & manual:
http://www.apcmedia.com/salestools/ASTE-6Z6JWV_R0_EN.pdf"
12  Other / Beginners & Help / Re: 220v Help on: February 12, 2012, 08:56:28 PM
Ya i think ill hire an electrician.. Just need to make sure I know exactly what I need done.
I am starting to give the whole 220v thing second thoughts, It sounded Ideal because the breaker was already there and I guess its more efficient, but maybe I should just wire 120v outlets, than I wouldn't need to spend all this extra money trying to get the power from the outlet to the psu.
13  Other / Beginners & Help / Re: 220v Help on: February 12, 2012, 08:07:56 PM
I suppose something like this would work as its universal:
http://www.amazon.com/Simran-SM-60-110V-250V-Universal-Protection/dp/B003UHYDYO/ref=sr_1_1?ie=UTF8&qid=1329077240&sr=8-1
14  Other / Beginners & Help / Re: 220v Help on: February 12, 2012, 08:03:02 PM
My main cutoff is outside so I would assume I am safe if that is off?
I went to the hardware store today and picked up two 250v 20amp outlets. But I am still confused about the whole possibility of using a surge protector. I have no idea if they even exist for US style outlets.. If not I guess I would have to wire multiple outlets, but it would be nice to be able to use a surge protector for the surge protection as well as having multiple plugs, any ideas?
15  Other / Beginners & Help / 220v Help on: February 12, 2012, 03:12:08 PM
I live in the US so all our wall outlets besides large appliances are 120v, I would like to setup power through a 220v breaker which I luckly/randomly have a spare 40amp 220v breaker in my box ready to go. I just cannot seem to figure out how to wire this. Yes I should probably hire an electrician, but before I would like to atleast understand what I would need to do and determine if I can do this myself.
Here are some of the questions I have
Can I hookup one wall outlet and use a surge protector? or maybe two outlets with surge protectors to split up the wattage.
If so, I have no idea what type of surge protector to buy, is a US 220v outlet the same as european because those are the only surge protectors I see for 220v application.
To hookup my power supply could I use a plug adapter or would i need new power cords with 220v plugs
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