Sizing service for motors

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Clb123

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If you have (2) motors that are the same HP and also electrically interlocked so that only (1) can come on at a time, can you size the service for (1) or does it have to be sized for both? Please help with Code Section. Thanks to all
 
220.60 Noncoincident Loads. Where it is unlikely that
two or more noncoincident loads will be in use simultaneously,
it shall be permissible to use only the largest
load(s) that will be used at one time for calculating the total
load of a feeder or service.
 
Where it gets complicated if your motors were not the same hp. For instance, one motor may require a different overcurrent protective device then the other otherwise you should be fine running a single branch circuit for the two motors.

to the OP--Ignore my pm-- I see you figured it out
 
Where it gets complicated if your motors were not the same hp. For instance, one motor may require a different overcurrent protective device then the other
Then, wouldn't you fit individual overload devices rated for the motor they are protecting?
Unless I'm missing something, I don't see that as complicated.
 
Then, wouldn't you fit individual overload devices rated for the motor they are protecting?
Unless I'm missing something, I don't see that as complicated.


That's the complication. You may have to add a fused disconnect instead of a non fused... Not complicaed but I should have said more involved
 
That's the complication. You may have to add a fused disconnect instead of a non fused... Not complicaed but I should have said more involved
I agree. If you only ever run one motor at a time you may want the other out of service for maintenance in which case you'd want individual disconnects for each anyway.
Maybe the OP can expand a little on the application.
 
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