Quote from: citronick on September 27, 2017, 05:15:45 AM

Quote from: philipma1957 on September 26, 2017, 09:46:11 PM

Quote from: citronick on September 26, 2017, 05:18:32 PM

Quote from: dragonmike on September 26, 2017, 09:29:53 AM

Quote from: citronick on September 26, 2017, 04:31:12 AM

Dude, how much power does that thing actually draw? I'm all for good airflow but this looks like it'll suck the power off of your rigs! Cheesy

This contraption has its own 20A circuit.

It shares the circuit with 3 industrial fan blowing out towards the windows.

Building rules prohibits me from modifying the window and install barn fans...

It eats 520watts and can suck 65 metre square of air volume per minute.

Its currently turned off and will in good use when its needed on hot days.

The warehouse has 63Amps/3-Phase 220-240v power so my electrician says I can play with 3 x 63amp = 189amps - less 10-20% for safety buffer.

So 150amps divide by 5amps (6xGPU-rig) or about 8amps for the 12-13xGPU rigs = 30 rigs (6xGPU-rigs) or 18 x 12-13xGPU-rigs.

runs hot were you live 30c/86f is a good day correct?

Yup. On a nice day 33c max, 29/30c at night. During hot days, 36-38c

There was once -- the whole week was too hot - 38-40c - some El-Nino event - 5mins inside the warehouse and I almost fainted because of the high temps, noise from fans running 100% and EMPs from the rigs, that was when I got that 2 x blower last year.

I also slowly discovered what components of the rigs were not up to the standard of 24x7 mining.... the obvious culprits were the cheap network cables going bad, Gen 1 USB risers and poorly built 4-pin molex. The EVGA PSUs worked like a champ even on high temp conditions.

Those times were stressful because the farm was crunching ETH all day - high electricity consumption, too much heat too. Power tripping became frequent - probably due to overheating PSUs. Those capacitors on the USB risers popping like popcorns with crackwhip sound occurs occasionally too. Probably due to heat and sub-standard build from Gen 1 USB risers from my R9-390 rigs circa late 2015-early 2016.

During this life after ETH, we have a combination of ZEC and XMR mining so the temps are not too bad - but when its hits 36-37c (near 100f) on a hot day - I turn on the blower to reduce temps by at least 2c.

when its too hot i work wearing my underwear only....nobody is around Cool

you get out as soon as possible, get the job done quickly like a true ninja.hhiiiiya!