2.5 HMI from house circuit?

phudsontx said:
Yes, US 220 volts is comprised of two legs of 110 volts but to accomplish what Patryck is asking using two legs of regular (edison) is not going to work. Here is why. The common plug in a home is 15 amps, 20 amps max. This is not going to be sufficient to light a 2.5K HMI. .
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Keep in mind none of this legal under the NEC and not safe.

If you wanted 40 amps at 120 volt you could parallel 2 outlets of the same phase but separate breakers.

For 20 amps at 240 volts use 2 outlets on opposite phase.
 
nwstudios said:
Light only care about applied voltage, not the phasing of the legs used to create the voltage.
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I'm not worried about the phasing, just the channel. It's about running two circuits through one bulb.

I'm not an electrician, so there might be a way; it just doesn't occur to me how to do it. I don't think there are any adapters which allow two outlets to combine into one, which is what we're talking about here.
 
David Jimerson said:
I'm not worried about the phasing, just the channel. It's about running two circuits through one bulb.

I'm not an electrician, so there might be a way; it just doesn't occur to me how to do it. I don't think there are any adapters which allow two outlets to combine into one, which is what we're talking about here.
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Don't think in terms of circuits as its not really relative. Applied voltage is all that really matters.

There are no pre made adapters for this type of thing as it is not legal to do :)
 
nwstudios said:
Don't think in terms of circuits as its not really relative. Applied voltage is all that really matters.
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That doesn't really clarify anything. What's a simple circuit diagram for running two outlets through one bulb?

You can say circuits aren't relevant, but you have to run the power somehow.


There are no pre made adapters for this type of thing as it is not legal to do :)
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There's a difference between legal and possible, and if it's possible, I'd just like to know how it's done. I certainly don't advise anyone to do it.
 
modern ballasts have a mind of their own these days and you may find it will refuse to fire up
if the wiring is not up to code or has some other irregularity.
 
nwstudios said:
Keep in mind none of this legal under the NEC and not safe.

If you wanted 40 amps at 120 volt you could parallel 2 outlets of the same phase but separate breakers.

For 20 amps at 240 volts use 2 outlets on opposite phase.
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NEC is code to be applied under new construction it does not apply to temporary applications. However, as I stated you do need to no what you are doing. I have done it for twenty years and never had a problem I was taught by a pro and do know how to read a meter and apply knowledge and not spout code.
 
David Jimerson said:
What's a simple circuit diagram for running two outlets through one bulb?

You can say circuits aren't relevant, but you have to run the power somehow.




There's a difference between legal and possible, and if it's possible, I'd just like to know how it's done. I certainly don't advise anyone to do it.
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As I posted earlier take find 2 "circuits" both on the same phase and connect them in parallel for 120v 30-40amp.
Trouble with this is you will not get a true parallel due to wire resistance differences and more current will flow on the path of least resistance.

For 240v find 2 120 volt circuits that are out of phase with each other.
 
nwstudios said:
As I posted earlier take find 2 "circuits" both on the same phase and connect them in parallel for 120v 30-40amp.
Trouble with this is you will not get a true parallel due to wire resistance differences and more current will flow on the path of least resistance.
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OK, but that didn't answer the question, and it coincides with one of my concerns.

It's not a big deal; I just wanted to see a diagram of how it's done. But it's not really worth belaboring the point.
 
don't mess around with trying to parallel 2 undersized circuits, just make an adapter to tap the dryer plug. Black, white and green leads will provide you with grounded 120v at 30a. Marrette and tape off the red lead and you'll be fine.
 
Isn't the deal that for safety, you must use a four wire dryer connection and you must know that the neutral is not bonded to ground at the outlet or to a water pipe because current on the neutral will also flow on the ground?
 
I don't know about 120, but if its running at 220 you can just use two hot legs and a ground. A neutral isn't needed.
 
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