Bitcoin Forum

Hello all.

I have recently acquired some new space, and it comes with a whole lot of these (wired and mounted, of course):

http://ecx.images-amazon.com/images/I/71revrq1YRL._SL1500_.jpg

There are actually 6 of them.....and I would like to use them to power my next build-out.  

I am seeking out the best advice on the most cost effective way to utilize these outlets to power many mining rigs.  

Points given for clarity, nice calculations in terms of capacity, and links to products that I may need to get my rigs plugged in a going.  

Thanks in advance!

Well,30 amps @ 220v=7200 watts max.So,6000 watts useable  ;D

That is per 6000 watts breaker,not per outlet.

Also,that's 4 prong=1-120v,1-120v,1-neutral & 1-ground,up to date for code  ;)

The 30 amp twist lock ends can be had at Home Depot:

http://www.homedepot.com/p/Cooper-Wiring-Devices-30-Amp-125-250-Volt-4-Wire-Twist-Lock-Plug-Black-L1430P/203492586#

For a 30 amp circuit,use at least 10/4 AWG 4 wire cables,8/4 AWG if you can find it.

Or this:


http://www.homedepot.com/p/DEK-Universal-25-ft-10-4-Universal-Generator-Extension-Cord-ACC02/100675654#

Couldn't find a 220 splitter,maybe a electrical supply house or have an electrician make one for you.

BTW,check the breakers,how many oulets on each one ???

Use a volt meter or a checker like this one,to find out if power is on or off on each outlet while turning the breaker on & off :

http://www.homedepot.com/p/Commercial-Electric-120-240-VAC-Voltage-Tester-MS8901H/202520560#

Good luck!!!  8)

You are pretty well set up.  You are going to want to purchase some server rack pdus.  You then have 3 options, Replace the end on the pdu cord, replace the receptacle in the wall with a l6-30 or make an adapter cord.  You may have 240v or 208v depending on your building service entrance. You can tell by counting the wires that come to your building above your meter.  If you have 2 insulated wires and one bare, You have 240v.  If you have 3 insulated wires and one bare it could be one or the other, you will need to use a voltmeter to be sure.

at 208v you are limited to 4992 watts (208v x 30amp x .8(derating for constant load))
at 240v you are limited to 5760 watts (240v x 30amp x .8(derating for constant load))

Here is the pdu

http://www.ebay.com/itm/APC-AP7841-Rack-PDU-Power-Distribution-Unit-Strip-L6-30P-/331087613387?pt=US_Power_Distribution_Units&hash=item4d165c0dcb

Here is the receptacle

http://www.ebay.com/itm/New-L6-30R-L630R-30A-250V-2-Pole-3-Wire-TwistLock-Female-Receptacle-IPS247-/231115859037?pt=LH_DefaultDomain_0&hash=item35cf94245d

Here is the cord end

http://www.ebay.com/itm/NEMA-L14-30-30-Amp-125-250V-3-Pole-4-Wire-Grounding-Plug-with-External-Cord-Grip-/111020708686?pt=LH_DefaultDomain_0&hash=item19d959934e


If it were me I would replace the receptacle.  If you dont feel comfortable doing that I can assist you in 2 ways.

I can purchase the pdu and the cord end, replace the cord end and ship it to you or I could make you some custom adapter cords and ship them to you.

I can make adapter cords for $45 each including materials +shipping.

Any specific reason why I could not use a PDU already utilizing an L14-30 cord end?

I don't see any reason why you couldn't.  Verify that they're 220, it's possible they're 120.  Are they labeled under the receptacle?

I am 98% certain it is 220v.  I will find out for sure tomorrow when my electrician takes a look.

Why are some outlets / wiring listed as 220 or 240 volts, and also why are some listed as 115 or 120 volts?  Shouldn't they all be the same, 120 volts per line and get either 120 or 240 only?  And how do you get 208 / 277 volts?  That's from a 3 phase setup, isn't it?

No, They are less common but would work.  Can you give me an example of one that you had found?  The only concern I would have is that they may run the equipment at 120v instead of 240v.  It will work either way but most power supplies are more efficient when you operate them at 240v.

In America the common voltages are

120v (single phase) single leg of split phase 240 or 208 to neutral/ground
240v (single phase) both legs of split phase 240
240v (mix phase or dual phase or three phase) Can get complicated
208v three phase feed using two or three of the legs
277v single leg of 480v three phase to neutral/ground
480v three phase feed using two or three of the legs

To whom did you award the bounty??

Geekman.  He is actually in the same area as I am, and is assisting in person. 

He didn't even post.

he pm'd.  Offered his expertise in person. 

im going to run a L6-30, with the cyberpower switch, https://www.bitcoinstore.com/cyberpower-switched-pdu-rm-2u-pdu30swhvt16fnet-30a-16-outlet.html

beware it cost me 220+ to ship it to canada