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Author Topic: Does it matter if I split power between both outlets?  (Read 242 times)
ben8jam (OP)
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November 17, 2017, 05:57:10 AM
 #1

I have a dedicated 20A circuit that I right now plug a 750W PSU into each outlet. So pretty meager pull.

However, I'm going to be adding 4 VEGAs into the mix and so got a 20A PDU strip (https://www.amazon.com/gp/product/B00077IS32/ref=oh_aui_detailpage_o04_s04?ie=UTF8&psc=1). So I'd like to plug what will now be four 750W PSUs (two diff rigs) into it (I'll be sure to keep it at 16A total either way) and then the PDU into the single outlet.

This may be a really obvious question - but ... that's okay right? It felt much better sharing the PSU's between two outlets, but that's probably me just being way over precautious.

I'm going to check the internal wiring to make sure it's 12gauge too.
adaseb
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November 17, 2017, 06:01:59 AM
 #2

Its ok if its under the same breaker, if not then best not to do it.
ben8jam (OP)
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November 17, 2017, 06:05:21 AM
 #3

Its ok if its under the same breaker, if not then best not to do it.

Thanks, yes, it's a single dual socket plug wired to the box with it's own 20a fuse. For some reason it just seems like sharing the Amperage between two plugs was better than one, but I assume that is the entire point of the PDU.
bitfools
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November 17, 2017, 06:10:48 AM
 #4

I have a dedicated 20A circuit that I right now plug a 750W PSU into each outlet. So pretty meager pull.

However, I'm going to be adding 4 VEGAs into the mix and so got a 20A PDU strip (https://www.amazon.com/gp/product/B00077IS32/ref=oh_aui_detailpage_o04_s04?ie=UTF8&psc=1). So I'd like to plug what will now be four 750W PSUs (two diff rigs) into it (I'll be sure to keep it at 16A total either way) and then the PDU into the single outlet.

This may be a really obvious question - but ... that's okay right? It felt much better sharing the PSU's between two outlets, but that's probably me just being way over precautious.

I'm going to check the internal wiring to make sure it's 12gauge too.


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NO, go to the DRYER CIRCUIT and RUN 220V with the two wires, and wire a bus to all power supplys on the bus, all power supply have a switch for 220 or 110

Running on 220v means 1/2 the current carrying capacity,

It's never a good idea to run more than a total of 1500 watts on a household circult and frequently the plates can have neutral & hot swapped, so if you plug into multiple outlets and swap hot&neutral so they short you will have a fire if lucky, and but certainly blow your main panel.

Just run a long 220V wire from your dryer to your rig room and run off 220v for all your rig power supplys and run them at 220v

12g is 20am, 10g 30amp, 14 gauge 15 amp,

think the normal wire in outlets its 14 gauge 15amp, that be 1500 watts, just one miner,

but if you run say 220v on a 10g wire, you can run 30amp, and get 6,000 Watts, maybe 8 rigs each running at 750watts off of one feed, the 220v is normal to be at 30amp, just like a lot of water-heaters

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Sure individual power supplys you can plug into all the outlets, but bare in mind usually in one room its just its all the same circuit, all the same 14gauge wire going back to the 15amp breaker on the 110v line, that means 1500 watts make per room, but a lot of places maybe all the bedrooms are on one breaker, you need to get a signal detector and write the breaker-number for every outlet in the house on the plate, so you know if you have too much load on one breaker

Another fuck is often electricians put lights on the same circuit is outlets, then when you turn on/off lights it causes a spike in the power supply resulting in a reboot if you don't have batter back-up isolation.

***

FYI  In my house I have all the plates for my computers on separate circuit breakers at 220v, in my computer room, I have only 30amp plugs at 220v, same in the kitchen so I can run industrial mixers and convection ovens.
bitfools
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November 17, 2017, 06:12:17 AM
 #5

if Its UR house, drop a 30AMP 220v line into your computer room, build your own outlet box don't buy one.

Plug your power-supplys in to the box, like I said 30amp at 220v means you can run 8 - 750W power supplys

ALL POWER supplys have a 220v switch, all are made in CHINA, where its 220v

30AM @ 220v = 6,600 Watts plenty of POWER for 8 CM750M power supplys to teach drive 4 1070 class cards, that means 32 GPUS driven off one 30amp line at 220v, with no problems

NEVER pull more than 1500 watts ( 15 amps ) in a single room, your asking for a fire, a lot of places use aluminum wire and you will burn your house down, make sure your 220v @30amp feed is copper, 10Gauge 2+ground is pretty cheap shit, just buy the stuff for electric dryers at home-depot.
ben8jam (OP)
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November 17, 2017, 06:21:25 AM
 #6

These are all excellent suggestions and I really wish I could go 220V, but the rigs are in the garage, which is not attached to the house (we rent too). So I'd have to run a line through the outside which is problem 1.

Two, our wash/dryer runs on a standard 20A plug (yes it has the little built in fuse) so no trying to piggyback off that (and it's in the house so still same problem of having to run external wiring).

The 20A plug in the garage (there are actually two of them) was installed by the previous owner as he had his recording studio back there. They are single outlets on their own 20A fuse in the box. So i kinda lucked out there. Right now I have two 7 GPU rigs running, one on each 20A (dedicated) outlet.

So... I'm kinda stuck with what I have. But the question still remains:

Is plugging the 20A (12gaguge) PDU into a single outlet on the 20A outlet (let's assume for right now the internal wiring is 12gauge too) okay?
adaseb
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November 17, 2017, 08:57:45 AM
 #7

These are all excellent suggestions and I really wish I could go 220V, but the rigs are in the garage, which is not attached to the house (we rent too). So I'd have to run a line through the outside which is problem 1.

Two, our wash/dryer runs on a standard 20A plug (yes it has the little built in fuse) so no trying to piggyback off that (and it's in the house so still same problem of having to run external wiring).

The 20A plug in the garage (there are actually two of them) was installed by the previous owner as he had his recording studio back there. They are single outlets on their own 20A fuse in the box. So i kinda lucked out there. Right now I have two 7 GPU rigs running, one on each 20A (dedicated) outlet.

So... I'm kinda stuck with what I have. But the question still remains:

Is plugging the 20A (12gaguge) PDU into a single outlet on the 20A outlet (let's assume for right now the internal wiring is 12gauge too) okay?

Don't worry about the internal wiring. Those are usually solid cooper wires. Just make sure that outlet is not worn out where the plug is loose and make sure the PDU plug isn't overheating. All you need to do is touch it.

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