A.I.C. Formula

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JHenry

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Need Help!
What is the formula for calculating A.I.C. drop from transformer to service equipment when A.I.C. at transformer is known and wire size and length of feeder to service equipment is known?:-?
 
Welcome to the forum.:)

AIC stands for amps interrupting capacity and is used to rate overcurrent devices for the amount of available fault current the device can handle before the device may fail.

What you are looking for is the available fault current at the panel.

HERE is a link to some free stuff provided by Mike Holt. If you can down the page you will see a free fault current calculator that you can download and use.

Chris
 
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