This was a service upgrade??
If it was installed in the beginning of 02, The MEC originally required AFCI on panel changes. That was rescinded in May of 02, but there was only a mailing to the inspectors. Lack of funding.
Also the only mfg at that time that I am aware had a 2 pole AFCI was CH (I may be mistaken, but that was the conventional wisdom)
If the time line seems right! this could have been a feeble attempt to address the AFCI issue. Not a very good attempt but that might be the motivation!
Charlie
