Wiring colors on 240v breaker


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Old 02-13-16, 02:52 PM
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Wiring colors on 240v breaker

Is there any circumstance that it matters what breaker terminal you connect the red and black wire? Working on a new 50 amp range receptacle and breaker.
 
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Old 02-13-16, 02:59 PM
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It does not matter.
Only case it matters I can think of is when there are 2 breakers feeding same device.
 
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Old 02-13-16, 03:05 PM
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Assuming single phase it doesn't even have to be black and red. It could be black and black or black and a white* that has been recolored red or black or any color but (white), gray or green.

*A black and recolored white are acceptable for cable but white should not be used in a conduit system. Canadian code may vary.
 
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Old 02-13-16, 05:52 PM
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The range probably uses both 120 volts and 240 volts and if so it requires a neutral. So you run cable or conduit with 3 conductors plus ground. The white is the neutral of course.

If separate breakers are used for the two hot legs the breakers must be next to each other hand have their handles tied together.
 
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Old 02-13-16, 07:14 PM
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If separate breakers are used for the two hot legs the breakers must be next to each other hand have their handles tied together.
It is my understanding that in 2005 the code changed to require a common internal trip so for 240v you can't use two single pole breakers. The pros will correct me if I am wrong. You may be confusing multiwire where two single pole breakers are allowed with a 240 volt circuit.
 
 

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