The customer wants a 480v, 125a MLO Sq. D NF panelboard for the service on an agricultural building. The PoCo transformers are pole mounted, delta-delta. Let's assume we have three 50kva transformers.

How do I select the correct aic breaker? The available sizes are;
65,000 aic
35,000 aic
18,000 aic

thanks,
GJ

[This message has been edited by golf junkie (edited 03-23-2004).]