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Topic: Need 240v power help (Read 2143 times)

hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
June 29, 2014, 08:39:18 PM
#21
I'm doing the exact same thing with an old dryer outlet to run a FrankenJup. It's the old style outlet so it didn't work with the Tripplite PDU that I bought. But I found an adapter cord meant to charge hybrid cars. Works great running a complete FrankenJup and an S2.
legendary
Activity: 2912
Merit: 1060
June 29, 2014, 08:17:06 PM
#20
The circuit is sized based on the amperage of the equipment to be utilized. If your source voltage is 240 volts, then a 6KW load will be 25amps. 80% of 30amps is 24amps, so by code, the dryer circuit and receptacle are not rated to handle that continuous load. If your source voltage is lower, say 220 volts, then the amperage will increase to 27.3amps.

A circuit rated at 40 amps would be recommended in this case.

A 30 amp dryer circuit, properly wired, will handle the 6KW load at 240 volts, but it is below the minimum standard that an electrician would install.

You may also have a greater risk of fire on the 30 amp circuit if the equipment were to malfunction.

Contact a local electrician if you are unsure about anything if installing or modifying any circuits.



Thanks
full member
Activity: 208
Merit: 250
June 29, 2014, 08:01:31 PM
#19
The circuit is sized based on the amperage of the equipment to be utilized. If your source voltage is 240 volts, then a 6KW load will be 25amps. 80% of 30amps is 24amps, so by code, the dryer circuit and receptacle are not rated to handle that continuous load. If your source voltage is lower, say 220 volts, then the amperage will increase to 27.3amps.

A circuit rated at 40 amps would be recommended in this case.

A 30 amp dryer circuit, properly wired, will handle the 6KW load at 240 volts, but it is below the minimum standard that an electrician would install.

You may also have a greater risk of fire on the 30 amp circuit if the equipment were to malfunction.

Contact a local electrician if you are unsure about anything if installing or modifying any circuits.

hero member
Activity: 1082
Merit: 505
A Digital Universe with Endless Possibilities.
June 27, 2014, 02:57:20 AM
#18
240V usually means 220V load and at max if your cable is 7064 (7 x0.64 gauge), Max load is 13A
Meaning yr load at max is 2860 - 3000 W

It will blow your circuit breakers and cause a fire.

Don't do it!
Its not the socket that cannot take it...it's the wiring...


The wiring and breaker are 30 amps
It's a dryer outlet. It better handle 30 amps

Nice, you should be able to run 6000kw without much problem then.
legendary
Activity: 2912
Merit: 1060
June 27, 2014, 02:19:18 AM
#17
240V usually means 220V load and at max if your cable is 7064 (7 x0.64 gauge), Max load is 13A
Meaning yr load at max is 2860 - 3000 W

It will blow your circuit breakers and cause a fire.

Don't do it!
Its not the socket that cannot take it...it's the wiring...


The wiring and breaker are 30 amps
It's a dryer outlet. It better handle 30 amps
member
Activity: 82
Merit: 10
June 27, 2014, 02:17:14 AM
#16
240V usually means 220V load and at max if your cable is 7064 (7 x0.64 gauge), Max load is 13A
Meaning yr load at max is 2860 - 3000 W

It will blow your circuit breakers and cause a fire.

Don't do it!
Its not the socket that cannot take it...it's the wiring...
legendary
Activity: 2912
Merit: 1060
June 27, 2014, 02:14:16 AM
#15
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



I don think that socket can handle more then 13 amp. You can try 6k watts and the power should disconnect immediately unless some fuse problem.

Actually I finally got it working
30 amps

Swapped in a l6-30 and found a ground wire. Taped up the neutral.
sr. member
Activity: 272
Merit: 250
June 27, 2014, 02:11:10 AM
#14
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



I don think that socket can handle more then 13 amp. You can try 6k watts and the power should disconnect immediately unless some fuse problem.
legendary
Activity: 2912
Merit: 1060
June 24, 2014, 12:13:15 PM
#13
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



dont even think about pulling 6kW from a single outlet/circle/phase.

and no ground is bad, but it may be nulled so it can still work.
best you call an electrician, and dont try to buy cheap parts/thin wires if wiring needs to be replaced.

cheers

i found a hidden ground

why no 6kw? 30*240= 7200
B/c you should not pull more than 80% load, if the load is constant. With mining, it would be a constant load.
7200 * 0.80 = 5760W

Let's hope the power supplies are efficient
legendary
Activity: 1134
Merit: 1005
June 24, 2014, 11:53:36 AM
#12
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



dont even think about pulling 6kW from a single outlet/circle/phase.

and no ground is bad, but it may be nulled so it can still work.
best you call an electrician, and dont try to buy cheap parts/thin wires if wiring needs to be replaced.

cheers

i found a hidden ground

why no 6kw? 30*240= 7200
B/c you should not pull more than 80% load, if the load is constant. With mining, it would be a constant load.
7200 * 0.80 = 5760W
legendary
Activity: 2912
Merit: 1060
June 24, 2014, 08:06:09 AM
#11
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



dont even think about pulling 6kW from a single outlet/circle/phase.

and no ground is bad, but it may be nulled so it can still work.
best you call an electrician, and dont try to buy cheap parts/thin wires if wiring needs to be replaced.

cheers

i found a hidden ground

why no 6kw? 30*240= 7200
legendary
Activity: 1722
Merit: 1000
Satoshi is rolling in his grave. #bitcoin
June 24, 2014, 07:29:24 AM
#10
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground



dont even think about pulling 6kW from a single outlet/circle/phase.

and no ground is bad, but it may be nulled so it can still work.
best you call an electrician, and dont try to buy cheap parts/thin wires if wiring needs to be replaced.

cheers
legendary
Activity: 2912
Merit: 1060
June 24, 2014, 02:19:37 AM
#9
$850/hr is still better then no house.

I found a guy on Craigslist for only $50
sr. member
Activity: 267
Merit: 250
6th BTC reached. Thank you for your support
June 23, 2014, 07:44:43 PM
#8
$850/hr is still better then no house.
jr. member
Activity: 38
Merit: 16
June 19, 2014, 09:09:34 PM
#7
Call a professional. Asking for advice on something that can burn down your home is not a good plan......

I can't pay $850/hr

 I am sure this is an exaggeration?  That would be one hell of an electrician. 

You should be able to test the outputs of the socket with a cheap multimeter that can read AC voltage to determine your ground.  Seriously though, why chance a fire to run your equipment!  You need to make sure the wiring can handle the load or you have a serious hazard.

850/hr??? Where do you live?

There is also some information you can get online (search "electrical codes" on a torrent site) that you can look at to aid you in making an informed decision. I am fortunate that I have a co-worker who is a journeyman electrician who works for beer!!!
legendary
Activity: 1218
Merit: 1001
June 19, 2014, 03:01:23 PM
#6
It looks like you are having the same idea I did.  That's an old style dryer outlet.  I have the newer 14-30 outlet.  I have yet to find any adapters and figure the reason is it's not a good idea Smiley

I do agree with everyone else though and you should consult a qualified person.
legendary
Activity: 1274
Merit: 1004
June 19, 2014, 01:47:16 PM
#5
I have a nema 10-30 outlet and I need that 6k watts

Is there anyway to use it? I need a pdu also to get 9 x c13

I am worried that the outlet doesn't have a ground


Is your PDU a 240V model with an L6-30 or similar? If so, you'll have effectively no current through the neutral, and running it this way wouldn't be much different than running a range or dryer on that plug. Your device will be grounded through the neutral as opposed to a dedicated ground, but since the wire will be substantial and the current measured in milliamps, there won't be any real difference to a modern system with a dedicated ground.

Still, it would be wise to consult with an electrician.
hero member
Activity: 784
Merit: 501
June 19, 2014, 01:24:28 PM
#4
Call a professional. Asking for advice on something that can burn down your home is not a good plan......

I can't pay $850/hr

 I am sure this is an exaggeration?  That would be one hell of an electrician. 

You should be able to test the outputs of the socket with a cheap multimeter that can read AC voltage to determine your ground.  Seriously though, why chance a fire to run your equipment!  You need to make sure the wiring can handle the load or you have a serious hazard.
legendary
Activity: 2912
Merit: 1060
June 19, 2014, 05:24:48 AM
#3
Call a professional. Asking for advice on something that can burn down your home is not a good plan......

I can't pay $850/hr
jr. member
Activity: 38
Merit: 16
June 19, 2014, 05:15:12 AM
#2
Call a professional. Asking for advice on something that can burn down your home is not a good plan......
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