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I actually just had an electrician in to do a circuit upgrade last week for my mining!

2000w at 120v is roughly 17 amps. This is actually a bit above the recommended continuous operation limit of a 20 amp circuit - you're only supposed to run at 80% rated capacity if running for more than 3 straight hours. It's close enough you could probably get away with a 120v 20 amp circuit per unit, especially if you're actually pulling less power - is 2000 watts the rated power of the PSUs (like two 1000 watt PSUs), or is that actually measured? I managed to burn out a GFCI pulling 19 amps through it, but that was actually measured with a clamp ammeter, not the theoretical max of the system.

You could have them do a single run of 240v 30 amp with an L6-30 plug, then run it into a PDU for distribution to the systems. The run would likely be $300, then another $100 for a dirt cheap PDU. Running at 240v is more efficient than 120v, plus it makes it easier to get the necessary power. One L6-30 would be enough to run your 3 rigs within the safety margins, and if they pull less current than they're rated for, you might be able to run a 4th on that. You could also spend a bit more for a metered PSU, which has a current display built into it so you'd know exactly how much power you're actually using (I am using this one from Tripp Lite, although I got a deal on it). You can find some cheap ones at http://www.refurbups.com/APC-PDU

As for what I specifically did - I had one big 100 amp line run to a subpanel, then put in 4 circuits in the mining room; 2 L6-30 240v 30 amp and two 5-20 120v 20 amp. The L6-30s each run 4 rigs with a bit of expansion room, and the 5-20s run cooling and peripherals (like routers).

Don't know about fast... but amazon has some for a decent price with free shipping.
I've gotten them in about a week to 10 days a friend of mine (same city) got his in about 4 days
http://www.amazon.com/PCI-E-Express-Extender-Flexible-Extension/dp/B008BZBFTG/ref=wl_it_dp_o_pC_nS_nC?ie=UTF8&colid=2S236SVHXZ1XV&coliid=IGWD09SV4853G

The APW3++ is a bit pricey due to it being brand new and in high demand, but the first batch from July is due to be delivered soon and they're still available on Amazon. Plus, they're specifically designed for the AntMiner L3+, which is what I assume you're attempting to power. Also, they can output 1200w over standard 120v power (up to 1600w over 220v), which is a nice improvement over the older APW3 and APW3+ models.
https://www.amazon.com/AntMiner-Power-Supply-1200W-Connectors/dp/B0733JRFVL/ref=sr_1_6?m=A1LBZI6C51C6OJ

If you give me your address, I'll send you a free one of these, on the house: The Merriam-Webster Dictionary New Edition (c) 2016 https://www.amazon.com/dp/087779295X/ref=cm_sw_r_cp_api_KKWWzbB1ZJ4J

Focus on your contractions too. Something we learned in the 1st grade over here. Good luck.

Card 0 Sapphire 7950 - 21196-00-20G

Clocks: 1100 Core, 1675 Memory

Voltage: 1087 VDDC

Temps: 70-75C

Fan: 60%

Running Guiminer with the following settings:

Thread Concurrency:21712, Vectors: 1, GPU Threads: 1, Stratum: Yes, Worksize: 256, Intensity: 20

KH/s: 659

Card 1 Sapphire 7950 - 21196-00-20G

Clocks: 1110 Core, 1675 Memory

Voltage: 1087 VDDC

Temps: 71-76C

Fan: 60%

Running Guiminer with the following settings:

Thread Concurrency:21712, Vectors: 1, GPU Threads: 1, Stratum: Yes, Worksize: 256, Intensity: 20

KH/s: 645

Running these side by side in a closed case with 6 case fans installed.

This is the model that I have:

http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU

Not sure about getting one where you're located - if you can't find a kill-a-watt, any plug-in type electricity monitor should work. I just like the kill-a-watt because it's cheap. Good luck!

Google is your friend.

https://www.amazon.com/AntMiner-L3-~504MH-Litecoin-Miner/dp/B06Y6KTH7P

You don't want to mine with an industrial miner in your house/dorm/apartment unless you have a dedicated room. These are loud and create a lot of heat.

I have used a Startech pci -> pcie adapter card (http://www.amazon.com/StarTech-com-Express-Adapter-Card-PCI1PEX1/dp/B0037ECAM2) which works well.



That + a 5850 or 5870 for $100 is gonna be your best bet.




Other than that, you're SoL.



www.netcodepool.org

> I've heard good things about the 1x to 16x USB powered risers and actually have some on order. The USB cord gives quite a bit more flexibility over the other stock risers.

> 1x to 16x USB http://www.amazon.com/gp/product/B00HZ0M9F2/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

With this Amazon USB riser you've shown.. you would then have to get another adapter for the molex to 6-pin connector, presumably?

A lot of GPUs, like AMD RADEON and nVidia 750 Ti, have 6-pin connectors on them... and so, presumably you'd have to get a 4-pin molex to 6-pin connector.

I wonder if one molex connector is actually enough power.

I noticed that my 750 Ti actually came with a molex to 6-pin adapter cable, but that it has 2 4-pin molexes.... and I just wonder if 1 molex is going to be enough.... Because the Amazon thing you linked only has 1 molex connector.

What do you think?

http://www.amazon.com/LEDwholesalers-GYO2402-6-Inch-Hydroponic-Booster/dp/B003YFADW8/ref=sr_1_3?ie=UTF8&qid=1368564334&sr=8-3&keywords=blower+fan

With Dryer style ducting works like a champ. I use it for ahem some basement grows.

These are lower quality risers. I recommend something like this instead

http://www.amazon.com/Powered-Flexible-Extender-Bitcoin-Mining/dp/B00EX627A8/ref=sr_1_6?ie=UTF8&qid=1394213776&sr=8-6&keywords=usb+riser

http://www.amazon.com/Express-Powered-Extender-Litecoin-Bitcoin/dp/B00HH1MLGQ/ref=sr_1_3?ie=UTF8&qid=1394213776&sr=8-3&keywords=usb+riser

Fair deal is up for a whole lot of interpretation. After all, video cards that used to be $300 are now $1000 due to the mining surge. But, having said that, these are the risers I've bought and they work flawlessly. Click on the "more buying choices" link, and then choose Powered Risers as the seller. $14.62 as of this posting.

http://amzn.com/B00HH1MLGQ

i bought the killowatt with the digital timer built in, so it's useful even when i'm not measuring anything. http://www.amazon.com/P3-International-P4480-Electricity-Electronic/dp/B001U638PM it paid for itself when i discovered i didn't need to upgrade the PSU in my PC to accommodate a new GPU card even while on full load. be sure to get a short extension cord when you buy any killowatt http://www.amazon.com/C2G-Cables-03137-Outlet-Extension/dp/B000233WJ6

ditto. I just bought a 4 pack of case fans from amazon. Does around 45 CFM at 2 Watts. I also have a squire cage exhaust fan I want to try out.

Watts = Volts x Current (Amps)

900W = 110V x Amps

900W / 110V = ~8A

8A x 2 Miners = ~16A Total

16A < 20A

Should be fine, as long as there's nothing else on this circuit with the miners. If you are in a newer structure, the wires in the walls and outlet should be rated for 20A, especially if it was wired to 20A breaker. You can get one of these Kill-A-Watt electricity usage monitor if you want to keep an eye on it. It would just plug into the outlet before the surge protector.

You shouldn't lose any hash when using risers. I'm using 16x to 16x risers (ones without power source) and 16x to 1x on some R9 270s with no issue, same hash before and after install. But with the 750 TI I believe those are strictly powered from the motherboard and putting multiples on the mobo I hear isn't the best thing. I would look at powered risers to avoid possibly frying your mobo.

I've heard good things about the 1x to 16x USB powered risers and actually have some on order. The USB cord gives quite a bit more flexibility over the other stock risers.

1x to 16x USB
http://www.amazon.com/gp/product/B00HZ0M9F2/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

Decent Guide on Risers
http://www.gobitgo.com/articles/1001/How-To-Correctly-Use-and-Install-PCI-E-Riser-Cables/

I just got a 7950 off Amazon for $280 a pop. That might change your calculations: http://www.amazon.com/Sapphire-DisplayPort-PCI-Express-Graphics-21196-00-20G/dp/B00BXVFM3K

This is the alternative I was looking for. I completly forgot about this.
I am not UK based and I also did a search for pci-e(Idk if it matters at all)
I came across this one
Now, the only question would be is how would this work with a case?

You would want to use a device called a killawatt: http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU

It will measure how much power your computer is drawing from the wall.

I do not recommend using an extension cable. Extension cables are usually not a good idea. I'd get a power cable like this at most: https://smile.amazon.com/gp/product/B002O0KM6G/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

To use two on a single unit there should be instructions with the miner, but in case there isn't my understanding is just power on the hashing boards then controller. But I don't think it matters too much as it takes a while for the controller board to boot and find the hashing boards.

Get the official PSU, https://www.amazon.com/Antminer-Power-Supply-APW3-Connectors/dp/B0733JRFVL

Correct. Dryer (30) and stove (50). Cable is a 10/3 100ft Conntek.

https://www.amazon.com/Conntek-RUL630PR-100-L6-30-Extension-100-Feet/dp/B074MNLD6R

I have a few Kill-a-watts and I keep one plugged into each of the computers in the house to keep an eye on things.

This thing! http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU

I went w/ this one, hanging over my crate rig.

Ah then you at least need a power switch or you can make a simple jumper (turn on your PS then use the jumper), here is a video: https://www.youtube.com/watch?v=WKHfW8emEpY

EDIT: You can also buy a switch combo or just the power switch. http://www.amazon.com/Switch-Power-Style-Push-Button/dp/B000NWFEZQ/ref=sr_1_4?ie=UTF8&qid=1394311109&sr=8-4&keywords=computer+power+switch . Also I posted the wrong Youtube video initially sorry.

I have been using
http://www.newegg.com/Product/Product.aspx?Item=N82E16833210002
or
http://www.amazon.com/Patriot-Office-Wireless-Adapter-PCBOWAU2-N/dp/B003WUX2X2
with no problems, just boot with it plugged in, no drivers needed