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I was looking at my service panel and discovered that a single 2 pole 20A breaker is being used to provide power to both a 120 v load (using a neutral) and and 240 v load without a neutral). The combined load is less than 10 amps. Is this arrangement permitted by the NEC?
 

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A "Handy Husband"
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12,337 Posts
Yes, you have a MWBC (Multi Wire Branch Circuit) with line to line (240) and line to neutral (120) load.
 

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JOATMON
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15,312 Posts
Yes, done all the time, I generally do it when an air handler is 240v and I need a 120v receptacle located at the unit as well.
I like that......that way if you kill power to ether ckt....your killing both....better than have your 121 power from a different breaker.
 

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A "Handy Husband"
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12,337 Posts
Yes, done all the time, I generally do it when an air handler is 240v and I need a 120v receptacle located at the unit as well.
I am not sure I would like that. You turn off the air handler and you lose power to the receptacle for lights and tools.

Unless you use a disconnect for the air handler only.
 
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