210.11(C)(3) question

[Sea Nile]

This question is related to Receptacles that service bathroom sinks only. How many bathrooms can be on a single branch circuit?

Up to now, I assumed it was a maximum of two. But now I'm thinking I was mistaken.

This is a purely academic question for my understanding, not real world scenario.

 

[packersparky]

This question is related to Receptacles that service bathroom sinks only. How many bathrooms can be on a single branch circuit?

Up to now, I assumed it was a maximum of two. But now I'm thinking I was mistaken.

This is a purely academic question for my understanding, not real world scenario.

As many bathrooms as you want to.

 

[GoldDigger]

As many bathrooms as you want to.

As long as the circuit supplies only bathroom receptacles.
The two maximum use alternatives are all outlets in one bathroom or only receptacles in all bathrooms. You choose which meets your needs better.
and you can always choose to serve less than the maximum from one circuit.

 

[infinity]

Yes as many as you want. When they built my house they put 4 bathrooms on a single circuit. This is a dumb code section.

 

[kwired]

Yes as many as you want. When they built my house they put 4 bathrooms on a single circuit. This is a dumb code section.

The only thing I see that does make sense about it is it lets you put the receptacle in some "powder room" (sink and toilet only) on with receptacles in other full bath(s). That powder room receptacle likely gets no significant load on it compared to the ones in other baths. But most the time that seems to take more wire than is worth to do this so I usually just put powder room on it's own circuit anyway, and include light(s) If AFCI were required in baths, that could change the thought on this though.

 

[Sea Nile]

Thanks, my logical thinking made me assume it was 2 max, but remembering that the code tells you what you can't do, and what you have to do, but never what you can do made me realize that my assumption was wrong.

I was thinking that if the code stated that if you put the lights and fans on the circuit, then you can only have one bathroom, then logically, the intent would not be to have 3 or more bathrooms if you only service the sinks.

 

[kwired]

Thanks, my logical thinking made me assume it was 2 max, but remembering that the code tells you what you can't do, and what you have to do, but never what you can do made me realize that my assumption was wrong.

I was thinking that if the code stated that if you put the lights and fans on the circuit, then you can only have one bathroom, then logically, the intent would not be to have 3 or more bathrooms if you only service the sinks.

If you have hair dryer usage at same time in multiple baths you will be resetting the breaker. That is a reality that code left up to the designer in this case, believe it or not in a code that has more and more become a design manual over the years.