Maximum Load allowed

[egurdian3]

Guys, which Article adresses the maximum number of OCPDs in a Distribution Panel? -In other words: If a Switchboard rated @ 2,500Amps has (2) 1,200A CBs, (2) 225A & (1) 200A, has that sum exceeded the allowed connected load?

 

[pete m.]

The only limit to the number of OCPD's that I know of would be either listing of the equipment or if the switches that you describe are service disconnects. Then your limit would be 6.

As far as the load is concerned you cannot exceed the rating of the switchboard. The sum of the "handle ratings" of the switches have nothing to do with the actual load.

Pete

 

[egurdian3]

The only limit to the number of OCPD's that I know of would be either listing of the equipment or if the switches that you describe are service disconnects. Then your limit would be 6.

As far as the load is concerned you cannot exceed the rating of the switchboard. The sum of the "handle ratings" of the switches have nothing to do with the actual load.

Pete

The OCPDs are not service disconnects. So, in other words if it can be demonstrated (proved) that the connected load does not exceed the 2,500A rating, then another 200A CB can be added, is that correct?
Is there an Article(s) that address this situation?

 

[pete m.]

The calculated load is what matters. You could have as many switches in that board as it will accept and it will do nothing to the actual load.

So, the short answer to your question is yes.

Check out part III of article 220 for feeder and service load calculations.

Pete

 

[infinity]

The OCPDs are not service disconnects. So, in other words if it can be demonstrated (proved) that the connected load does not exceed the 2,500A rating, then another 200A CB can be added, is that correct?
Is there an Article(s) that address this situation?

Yes, no different than trying to add up all of the circuit breakers in a full 200 amp panel and then saying that they sum exceeds 200 amps.