I have a 3-wire home run to the panel which supplies 2 circuits. One of the circuits supplies a bedroom and I want to comply with the arc-fault breaker protection rule. Square D indicates the common neutral will cause the arc-fault to trip. Is there a solution to this?

Bob

The only solutions are if a 2 pole AFCI breaker is available, or pull a 2 wire cable for the AFCI circuit.

Two-pole AFCIs are available, but not in great quantity or selection yet. This is one of my pet peeves about AFCIs being FORCED down our throats by the manufacturers who lobbied the NEC.

Are you looking to go AFCI merely by choice, or is an inspector requiring them?