Multiwire circuit question
#1
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Multiwire circuit question
Is it legal to connect say the red and black (3 wire cable) to 120(different phases) and the white to neutral? Have been told the phases cancel each other out.
#2
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Post makes no since.
The more details you can give the better.
What is it your really trying to wire up?
The more details you can give the better.
What is it your really trying to wire up?
#3
What you are talking about is called a multi-wire branch circuit. Properly wired the neutral current is the difference of the hot current. A double pole or two handle tied breakers are needed.
As newer codes call for afci protection they are being used less.
As newer codes call for afci protection they are being used less.
#4
Yes you may, and yes you must in this situation connect the red and black to different phases of a 3 phase system or opposite legs of a single phase 120/240 volt system when wiring up this kind of multiwire branch circuit..
However do not use the "high leg" in a 120/240 volt delta 3 phase system for this.
The high leg measures about 208 volts hot to neutral and is normally used only with 3 phase tools and appliances (used together with both of the other phases).
However do not use the "high leg" in a 120/240 volt delta 3 phase system for this.
The high leg measures about 208 volts hot to neutral and is normally used only with 3 phase tools and appliances (used together with both of the other phases).