I pretty much know the answer to that, no, they shouldn't
. That's why I'm baffled. Trying to determine if I have faulty power calculations or just got a bad PSU. My setup:
240/250v 30A Dryer Recepticle (NEMA 14-30R)
NEMA 14-30R to L6-30R for my ..
PDU30BVHVT20F (Cyberpower PDU 30A)
I have two Avalon 741's, two 1200W PSUs from amitylabs (
https://www.ebay.com/itm/Power-Supply-for-Antminer-L3-110V-or-Antminer-D3-L3-A741-220V/182723026931?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649).
My calculations
2 miners = 1200w x 2 = 2400w
2400w / 240v = 10A each
10A + 10A = 20 AMP total. On a 30AMP plug thats roughly 67% load all the time (in safe range)
I ran one miner for about 8 hours just to see how it worked before hooking the second one up.
Hooked the second one up to the opposite bank on the Cyberpower PDU, and after 1-2 minutes I heard POP - outside breakers didn't flip (I think the PDU breaker did). Now the PSU is bad (no lights come on on the PSU - ever).
So are my power calculations off, or did I just get a pad PSU? Amitylabs has an awesome reputation and amazing support, so I don't doubt they will rectify the situation. Just want to make sure I'm not about to burn my house down.
Note: I confirmed that the Avalon 741 did not die, just the PSU. I'm currently running the 741 on the first PSU that works.