Quote from: nexus99 on August 03, 2014, 02:55:24 AM

Quote from: PlanetCrypto on August 03, 2014, 02:48:46 AM

What 7.5-8.0 TH/s looks like.
Dissipating ~24,000 BTU.
Most PSU's = EVGA 1300's, powers 3 S3's each with current to spare.
Bitmain Rocks!

Is this running off of 120 or 240? What amperage circuits?

I am looking at standing up about 20 of these off 2 240v 30 amp circuits and I'm curious about your experience.

Currently, the S3 supply's are running off of 120V.
Will be swapping out the breakers to 240V double poles probably tomorrow.
Using the EVGA 1300's each S3 at a stock clock draws exactly 325W each at the wall or about 975W per PSU (8.125 A @ 120VAC).
So 1 20A Sigle Pole Breaker per 2 PSU's (16.5A draw per 20A breaker).
So @ 240V one should easily be able to run 4 PSU's (12 S3's) per 20A 240V breaker (240V*20 = 4800W).
Am making the swap to 240V cuz' have heard that the EVGA 1300 are slightly more efficient @ 240V than 120V.
And also allows for using thinner gauge wire per circuit.

Think your idea of 2x 30A@240V is overkill.
2x 20A @ 240 would run 24 S3's USING THE EVGA 1300's.
Other PSU's may not be as efficient and hence require a larger current draw.

Hope this helps.