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Old 04-02-2013, 06:56 PM   #1
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240v outlet


Hi,

I have a 240v outlet and was wondering if I can tap off that outlet to add another 240v outlet? Also, I was looking at a 20amp 240v extension outlet at the store and it said 2p 3w. Im assuming that means 240v, 3 wire? It said to use a red and black for hot feeds but I was always you can use your neutral as the second hot wire. Is this correct or should it be 12/3 wire?

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Old 04-02-2013, 07:00 PM   #2
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240v outlet


Much of this answer depends on what you plan on powering. What are the voltage specs? 240V? or 120/240V?

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Old 04-02-2013, 07:03 PM   #3
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Much of this answer depends on what you plan on powering. What are the voltage specs? 240V? or 120/240V?
Im not sure what im planning on powering but just plan on using a 120v outlet. When it says 120/240v does that mean you can use both voltage?
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Old 04-02-2013, 07:08 PM   #4
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240v outlet


Sure would be nice if you would go back and add your location to your profile.
Just go to Quick links to edit.
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Old 04-02-2013, 07:23 PM   #5
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Im not sure what im planning on powering but just plan on using a 120v outlet. When it says 120/240v does that mean you can use both voltage?
I'm confused, your OP states that you want to tap a second 240V receptacle off an existing 240V receptacle.
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Old 04-02-2013, 07:35 PM   #6
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I'm confused, your OP states that you want to tap a second 240V receptacle off an existing 240V receptacle.
Yes just curious if I could do that. Can I splice into one 240v outlet and feed another 240v outlet? Also, the extension cords with 3 prongs 240v. I read the directions it says for a ground and 2 hot wires. It said to use red and black for hot. Can I use the neutral as the 2nd hot wire and just use 12/2 for that? Now with 4 prongs I know you need 12/3 though.
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Old 04-02-2013, 07:42 PM   #7
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240v outlet


In general, yes to both questions.
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Old 04-02-2013, 09:05 PM   #8
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In general, yes to both questions.
Yes, you can have as many 240 volt outlets on a circuit as you want. I have about a dozen in my garage.

12/2 works just fine for a 240 volt outlet that's straight 240, not a 120/240 one like a dryer.

Rob
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Old 04-02-2013, 09:47 PM   #9
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Yes, you can have as many 240 volt outlets on a circuit as you want. I have about a dozen in my garage.

12/2 works just fine for a 240 volt outlet that's straight 240, not a 120/240 one like a dryer.

What is 120/240 exactly? You can run either 120v or 240v appliances off that? What type of breaker would you need?

Rob
What is 120/240 exactly? You can run either 120v or 240v appliances off that? What type of breaker would you need?
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Old 04-02-2013, 09:49 PM   #10
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Yes, you can have as many 240 volt outlets on a circuit as you want. I have about a dozen in my garage.

12/2 works just fine for a 240 volt outlet that's straight 240, not a 120/240 one like a dryer.

Rob
Now, you can't plug in a 120v line into a 240v receptacle, right?
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Old 04-02-2013, 09:50 PM   #11
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240v outlet


A 120/240V load includes a neutral with the two hots. This is done primarily for appliances that require 120V for controls.
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Old 04-02-2013, 09:54 PM   #12
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A 120/240V load includes a neutral with the two hots. This is done primarily for appliances that require 120V for controls.
I though you use the neutral as the second hot? With 120/240 do you need a double pole breaker?
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Old 04-02-2013, 10:00 PM   #13
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240v outlet


No, the neutral is the neutral. A neutral is not a hot. You can legally use a white wire as a hot (remarked black), but just because the wire is white, it does not mean it is a neutral. If you used a 2 wire cable (w/ground) for a 240V only load, you would use a 2 pole breaker, remark the white wire with black tape and land both the black and the remarked white to the breaker. The ground CANNOT be used as a neutral.
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Old 04-02-2013, 10:08 PM   #14
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No, the neutral is the neutral. A neutral is not a hot. You can legally use a white wire as a hot (remarked black), but just because the wire is white, it does not mean it is a neutral. If you used a 2 wire cable (w/ground) for a 240V only load, you would use a 2 pole breaker, remark the white wire with black tape and land both the black and the remarked white to the breaker. The ground CANNOT be used as a neutral.
So, to wire a 120/240 outlet I would use white and black for the two hots though?
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Old 04-02-2013, 10:11 PM   #15
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No, you would need a third wire...Black, Red, White (Ground).

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