using 240 V cicruit for 110 V

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cmiller41

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What is the code section that says you CANNOT tap off one leg of a 240V and use as a 110 so that you have a 240V circuit (breaker) in a J-Box and tap one leg and run 110V from it so breaker feeds both
 
What is the code section that says you CANNOT tap off one leg of a 240V and use as a 110 so that you have a 240V circuit (breaker) in a J-Box and tap one leg and run 110V from it so breaker feeds both

There is no code section that says that.

We can do that assuming there was a neutral with the circuit and the overcurrent protection is correct.
 
Would this also mean that you could by rights install a 20 amp 240v feed to an outside condensing unit, pull a neutral along with it, and tap off of the line side of the disconnect to feed a 15 or 20 amp 120v GFI Receptacle next to the pullout?
 
If you're going to supply more than one 120V load, I would make it a MWBC downstream of the 240V tap to balance the load on the phases and minimize the current on the grounded conductor.
 
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