getting enough power from a normal house electrical system! - page 3.

MrTeal

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Quote from: spiceminer15 on August 19, 2014, 06:16:24 PM

http://www.ebay.ca/itm/Avocent-Cyclades-PM10i-Intelligent-PDU-Rack-Mount-PM-10i-30A-/151383789679?pt=US_Power_Distribution_Units&hash=item233f2d506f

this one that was linked shows 30a max??

that's really not enough, I guess I've had to have like three of these...

PDUs have two ratings. The first is the total rating, which in that case is 30A. The second is the per-outlet rating, in this case 10A. Why would you need 3 of them?

For instance, while the Pulizzi one you linked has 24 C13 sockets (so probably 10-13A rated each), the whole bar is only rated to 20A in total.

Quote from: spiceminer15 on August 19, 2014, 06:20:18 PM

what about this one?

http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=AP7608

Three phase.

You're looking to run 19 S1s, correct?
You can downrate a receptacle, so here would be my minimal cost suggestion if you don't want your electric heater anymore.
Install two utility boxes with a L630R. (~$50)
Wire the two existing 50A lines to them.
Buy two of the PM10i-30a's (~$100)
Plug all your PSUs into the PDUs.
Plug the fans/switches into a 15/20A 120V circuit on the wall.

spiceminer15

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what about this one?

http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=AP7608

spiceminer15

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http://www.ebay.ca/itm/Avocent-Cyclades-PM10i-Intelligent-PDU-Rack-Mount-PM-10i-30A-/151383789679?pt=US_Power_Distribution_Units&hash=item233f2d506f

this one that was linked shows 30a max??

that's really not enough, I guess I've had to have like three of these...

spiceminer15

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is that 20a per outlet??

dropt

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Quote from: spiceminer15 on August 19, 2014, 05:59:48 PM

this one look ok???

http://www.ebay.com/itm/Pulizzi-Z-Line-VPC2769-B2-20A-240V-PDU-R-/331056386094?pt=US_Server_Power_Supplies&hash=item4d147f902e

No, only 20A.

spiceminer15

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this one look ok???

http://www.ebay.com/itm/Pulizzi-Z-Line-VPC2769-B2-20A-240V-PDU-R-/331056386094?pt=US_Server_Power_Supplies&hash=item4d147f902e

dropt

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Quote from: spiceminer15 on August 19, 2014, 05:19:48 PM

how would I put more than one 240v socket if there is only one set of wires?

Junction box, or perhaps a 60A subpanel.

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Quote from: MrTeal on August 19, 2014, 04:59:19 PM

All is not lost though, you still could put a couple 240V PDUs onto one of those circuits. As I linked, you could pick up a couple of cheap managed PDUs for $100 shipped. Any modern PSU can handle 240V and will be more efficient that way anyway.

how would I put more than one 240v socket if there is only one set of wires?

spiceminer15

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i'm a software eng and one of my clients has a IT business, i'll try to get whatever old ones he has lying around for free Cool

dropt

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Quote from: spiceminer15 on August 19, 2014, 05:13:45 PM

ok this one has a decent explanation, it says max output 16a per socket

I have one of those, they're quite nice. Personally though, if I were buying more, I'd go with the Avocent posted as it's managed.

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ok this one has a decent explanation, it says max output 16a per socket

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http://www.ebay.com/itm/NEW-Dell-Metered-LCD-Power-Distribution-Unit-PDU-200V-240V-24A-G740N-DELL6802-/221474734973?pt=US_Power_Distribution_Units&hash=item3390ec437d

ok this one actually gives a good look at it, looks like I'll have to make a 240v plug for this one to work.

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I also don't understand how they rate the PDUs. some of them say like max 16a?

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Quote from: MrTeal on August 19, 2014, 04:59:19 PM

Quote from: spiceminer15 on August 19, 2014, 04:47:19 PM

I guess I didn't really look hard enough at first it does say 240v on the furnace. I was looking at the other thing on the plate

it says 208 - 240v (120v ground) 60hz

So, short answer is no, you can't run normal 120V stuff on this circuit as it doesn't look like there is a neutral.

All is not lost though, you still could put a couple 240V PDUs onto one of those circuits. As I linked, you could pick up a couple of cheap managed PDUs for $100 shipped. Any modern PSU can handle 240V and will be more efficient that way anyway.

ok I've seen a few PDUs for cheap on ebay or craigslist.

I've never used one before. how does it work? do I run the two 240v wires into it? or do I need to wire up a 240v plug??? I made the one for our dryer, so I've done that before.

just not sure how they work,

MrTeal

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Quote from: spiceminer15 on August 19, 2014, 04:47:19 PM

I guess I didn't really look hard enough at first it does say 240v on the furnace. I was looking at the other thing on the plate

it says 208 - 240v (120v ground) 60hz

So, short answer is no, you can't run normal 120V stuff on this circuit as it doesn't look like there is a neutral.

All is not lost though, you still could put a couple 240V PDUs onto one of those circuits. As I linked, you could pick up a couple of cheap managed PDUs for $100 shipped. Any modern PSU can handle 240V and will be more efficient that way anyway.

spiceminer15

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btw the scary circuit is going to the range

spiceminer15

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I guess I didn't really look hard enough at first it does say 240v on the furnace. I was looking at the other thing on the plate

it says 208 - 240v (120v ground) 60hz

spiceminer15

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plate on furnace:

breakers on furnace:

wires going into furnace:

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Quote from: MrTeal on August 19, 2014, 04:33:00 PM

Quote from: spiceminer15 on August 19, 2014, 04:29:31 PM

what can I do with the wires running into the furnace to be able to plug in some normal 110 plugs into it? is there something I can do myself?

Can you post a picture of the furnace nameplate? If there is 3 conductor cable running to the furnace, it's physically possible that you could be running at 110V. It would be extremely weird though. Often what you will see is that you'll have the element run off 240V at high current, and then lower draw items like the fan motor and the control systems will run off one of the 120V legs.

ok just a min

MrTeal

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Quote from: spiceminer15 on August 19, 2014, 04:29:31 PM

what can I do with the wires running into the furnace to be able to plug in some normal 110 plugs into it? is there something I can do myself?

Can you post a picture of the furnace nameplate? If there is 3 conductor cable running to the furnace, it's physically possible that you could be running at 110V. It would be extremely weird though. Often what you will see is that you'll have the element run off 240V at high current, and then lower draw items like the fan motor and the control systems will run off one of the 120V legs.

Topic: getting enough power from a normal house electrical system! - page 3. (Read 10681 times)