Can i tap into a 2 phase plug to run additional single phase outlets

[Bigmansm]

I have a 220Volt, 2 phase, 40A breaker where i ran romex to a plug. for my air compressor/Tig welder.

If it was possible to daisy chain my 110vm 1 hase 30amp electrical wiring into this plug and run that wiring in a rigid conduit to the other plugs on my wall, that would be helpful. I would avoid using another breaker and not have to deal with the tight space in the panel that i am already dealing with.

Thanks for the advice

 

[theoldwizard1]

No (for several reasons).

 

[rsanter]

Are you talking real two phase or what everyone calls single phase 220?

Bob

 

[MikeF2316]

I have a 220Volt, 2 phase, 40A breaker where i ran romex to a plug. for my air compressor/Tig welder.

If it was possible to daisy chain my 110vm 1 hase 30amp electrical wiring into this plug and run that wiring in a rigid conduit to the other plugs on my wall, that would be helpful. I would avoid using another breaker and not have to deal with the tight space in the panel that i am already dealing with.

Thanks for the advice

The main reason for no is you will now have outlets and wiring rated for less than 40 amps protected only by a 40 amp breaker.

 

[dave*99]

You mentioned an air compressor and a TIG welder. Not sure if you have 1 receptacle that you share for these tools or not, but ultimately they would be best served with separate circuits. Sounds like you should consider a subpanel.

 

[rjacobs]

The biggest problem is there is/should be no neutral in that box. 2 hots and a ground. At least I have never run anything other than 3 wires into a welder receptacle.

The other, as was mentioned, are regular 110v outlets are generally only 15/20 amp outlets let alone the 14g(most likely) wiring that you would be using isnt rated to 40 amp either.

 

[LS6 Tommy]

It would be kind of hard since there's no such thing as 2 phase...

Tommy

 

[marinusdees]

There is such a thing as two phase. It was rare but may still be used in some places. This is not what he is dealing with. If he doesn't know any better than his, he should consult with/hire someone who does to do what he wants. IMHO

 

[Bigmansm]

Are you talking real two phase or what everyone calls single phase 220?
Bob

This may be true. I just thought it was two phase because of the way the breakers look.

The main reason for no is you will now have outlets and wiring rated for less than 40 amps protected only by a 40 amp breaker.

I was afraid of this. I was thinking i could use a GFCI outlet on that strand for protection.

You mentioned an air compressor and a TIG welder. Not sure if you have 1 receptacle that you share for these tools or not, but ultimately they would be best served with separate circuits. Sounds like you should consider a subpanel.

I do share a single plug. I have never needed both running at the same time.

 

[Dragfluid]

I do share a single plug. I have never needed both running at the same time.

Once my shed is completed, I'll have a Mig, Tig, and plasma cutter, sitting next to each other. I won't be using them at the same time, either. And each one will have its own outlet. Same circuit, though.

Every time you plug and unplug one of those, it takes just a little bit of life away from the receptacle. Do it nice, do it right. Give them each their own outlet.

 

[ishiboo]

A GFCI provides zero overcurrent protection. You would need a breaker.

But if you used a standard plug for a welder/compressor, there is no neutral.

 

[LS6 Tommy]

There is such a thing as two phase. It was rare but may still be used in some places. This is not what he is dealing with. If he doesn't know any better than his, he should consult with/hire someone who does to do what he wants. IMHO

Yeah, in 1901.

Actually, I seem to recall there's a town in PA that still uses it in the government buildings...

Tommy

 

[pattenp]

Once my shed is completed, I'll have a Mig, Tig, and plasma cutter, sitting next to each other. I won't be using them at the same time, either. And each one will have its own outlet. Same circuit, though.

Every time you plug and unplug one of those, it takes just a little bit of life away from the receptacle. Do it nice, do it right. Give them each their own outlet.

To do it right is a dedicated circuit with one outlet, not multiple outlets on one circuit.

 

[offshorebear]

It would be kind of hard since there's no such thing as 2 phase...

Tommy

I lost a bet to this, but in parts of Philly there is 2 phase. Weird, but you are close enough to there that I thought I would mention that.

 

[grzellmer]

If its two hot wires and a ground = No. If two hots a neutral and ground then yes BUT as others have said you'd need to put a main lug box in the middle so its 40A to the welder and 15A (14 GA wire) or 20A (12 GA wire) to the outlet. Since this is kind of a hack job (Safe but a hack job) I would recommend against it.

 

[nsula_country]

No (for several reasons).

+50,000!!!

No! Not safe, not code... No further info! Sub panel or new home runs. ONLY!!!

CT

 

[Ironhorse74]

It would be kind of hard since there's no such thing as 2 phase...

Tommy

Not so fast. I worked for a short line RR, the CRANDIC. It was owned by an electric utility and used to run elecric street cars. I worked in the old house which was 2 phase. Each leg separated by 90 degrees. Antique as hell and pretty sure the only reason it was allowed to continue is that it was owned by the electric utility.

Brad

 

[Norcal]

240 volt 2 phase is still in use around Philadelphia but is obsolete, 220 volts has a hot and a neutral & is 50 hertz, US and Canada is 60 hertz.



https://en.wikipedia.org/wiki/Two-phase_electric_power

 

[wyliesdiesels]

I have a 220Volt, 2 phase, 40A breaker where i ran romex to a plug. for my air compressor/Tig welder.

If it was possible to daisy chain my 110vm 1 hase 30amp electrical wiring into this plug and run that wiring in a rigid conduit to the other plugs on my wall, that would be helpful. I would avoid using another breaker and not have to deal with the tight space in the panel that i am already dealing with.

Thanks for the advice

What is the HP rating on the compressor?

This may be true. I just thought it was two phase because of the way the breakers look.

I was afraid of this. I was thinking i could use a GFCI outlet on that strand for protection.

I do share a single plug. I have never needed both running at the same time.

GFCIs are NOT breakers. Read up on GFCIs!

 

[Dragfluid]

To do it right is a dedicated circuit with one outlet, not multiple outlets on one circuit.

In the OP's case, yes. It wouldn't be good for the compressor to be kicking in while he's laying a bead.

In my case, no. I can't use 2 welders at the same time. Not that talented.
And not going to make 3) 70' runs of 6-3.

 

[70R]

Not sure of your logistics, but if you have a neutral to the outlet, you can put one of these before the outlet and it gives you two addition circuits:

http://www.menards.com/main/electrical/circuit-protection-distribution/safety-switches-disconnects/eaton-type-ch-50-amp-spa-panels/p-1444429554239-c-6435.htm?tid=-9152171163151948243

Probably not worth the $ once you replace the GFCI breaker. Maybe there are less expensive box-only ones out there?

 

[Bigmansm]

I'll just run another line if that is the case. It's extra work but not the end of the world.