just a thought but my knowledge is limited compared to most here. If you ran three miner off one psu.. what if you had voltage drop which would increase the amperage running thru the miner .. could be this scenario.
http://ask.metafilter.com/244859/Voltage-drop-amperage-increase"If you have switch mode power supplies (e.g. practically all IT equipment these days) then when the voltage drops they will pull more current to keep up their output. If your voltage sags a bit because of too high a demand then they all pull more current and you're boned."
Best regards
d57heinz
Exactly what I was trying to point out in the first place in different words. Its so good to see A person out here that knows what he is doing. its feeble-minded people that dont even have common sense and think they know it all is the ones I hate. but I know what I have and hold and is recognized by the NEW YORK STATE BOARD OF REGENTS. usa. and other stuff which i will not mention.
Don't forget to polish your "clueless dickhead of the year" trophy. It's more widely recognized than the New York State board of regents. Though I'm sure they would be honoured that someone of your intellectual capacity and attention to grammar is publicly representing their fine organization.
Love,
A feeble minded person
just a thought but my knowledge is limited compared to most here. If you ran three miner off one psu.. what if you had voltage drop which would increase the amperage running thru the miner .. could be this scenario.
http://ask.metafilter.com/244859/Voltage-drop-amperage-increase"If you have switch mode power supplies (e.g. practically all IT equipment these days) then when the voltage drops they will pull more current to keep up their output. If your voltage sags a bit because of too high a demand then they all pull more current and you're boned."
Best regards
d57heinz
What they were referring to in that link is on the AC side of things (hence referring to the blowing of the AC fuses). The reasoning being since the current demanded on the DC side of the power supplies stayed constant, but the voltage provided on the AC side was effectively decreased, the result was an increase of amperage to maintain the said output. My problem did not happen on the AC circuit, but on the DC circuit (one miner) shorting and burning.
When AC voltage decreases, current on that circuit increases to maintain DC output. By that reasoning if AC voltage dropped low enough and resulting amperage increased, the circuit breaker on the PDU (read: AC side) would have tripped. However, as alluded to previously, if DC voltage mysteriously would have decreased due to these circumstances (which it wouldn't), the current through the miner would have also decreased (following the same logic used for under-volting string miners to increase efficiency) and not the opposite catastrophic event.