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Old 01-18-2011, 12:27 PM   #1
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split 220 4wire into two: 220v and 110v


Hi,
Is it possible to split a 220 4wire outlet into two outlets: one of 220v (4wire) and other of 110v (3wire)?
Thanks in advance.

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Old 01-18-2011, 12:30 PM   #2
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split 220 4wire into two: 220v and 110v


Generally yes. The cable can travel from one outlet box to another with 110 volt outlets fed with red and white or with black and white. The 220 volt outlets are of course fed with red and black (also the white for a 4 prong receptacle).

If the circuit is breakered at more than 20 amps a subpanel is needed with 15 or 20 amp breakers before continuing on to ordinary 110 volt receptacles.

A portable subpanel can be made with a plug to fit an existing 4 wire 220 volt receptacle and with 110 and 220 volt receptacles.

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Old 01-18-2011, 01:32 PM   #3
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split 220 4wire into two: 220v and 110v


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Originally Posted by Abhi View Post
Hi,
Is it possible to split a 220 4wire outlet into two outlets: one of 220v (4wire) and other of 110v (3wire)?
Thanks in advance.
It would be best to tell us what the existing 4 wire 220 volt branch circuit serves and will it continue to serve what it does now. For example does it serve an electric dryer and will it continue to serve the dryer.

Typically you can purchase split 240 volt and 120 volt duplex receptacles but you will not be able to use an electric dryer. As Alan said you will likely need to change your circuit breaker if the branch circuit currently serves an electric dryer and you wish to change to something else and 120 volt receptacles also or add a subpanel.

Most 4 wire 240 volt circuits serve either electric dryers or electric ranges in residential settings.
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Old 01-18-2011, 02:49 PM   #4
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split 220 4wire into two: 220v and 110v


Thank you for the replies.
This 200v 4wire outlet is in my kitchen and used to serve a built-in microwave/oven combination. I'm now replacing that with separate built-in oven and microwave. The oven requires 200v and microwave requires 110v. Can i just "branch-off" the red, white and ground cables to serve the microwave, leave the oven on the existing red, black, white and ground cables, as it was before?
Thanks in advance.
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Old 01-18-2011, 04:14 PM   #5
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split 220 4wire into two: 220v and 110v


In this post you said you have 3 wires, now you say 4.
What is the real deal?

split 220V 3wire between Oven and Microwave
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Old 01-18-2011, 04:16 PM   #6
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split 220 4wire into two: 220v and 110v


What size wire and circuit breaker serve this 240 volt circuit ?
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Old 01-18-2011, 09:06 PM   #7
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split 220 4wire into two: 220v and 110v


jbfan: that was a different post where i was mistaken. I have a 4wire 220v circuit.
The wire for this circuit are Aluminum, 6 gauge, with 50 amp breaker.
Also, what is the difference between aluminum and copper wires as far as performance and amp load they can carry?
Thanks.
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Old 01-18-2011, 10:20 PM   #8
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split 220 4wire into two: 220v and 110v


Aluminum wire needs to be "one size" bigger than copper for the same number of amperes. So the 6 gauge aluminum is equal to 8 gauge copper.

Aluminum wire requires special methods for making connections so nowadays it is less popular except for larger sizes where the lower weight and lower cost advantages of aluminum become significant..

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