Marc Posted February 14, 2016 Report Share Posted February 14, 2016 [br Out of curiosity, why is it that when doing a panel change out, AFCI protection isn't required for existing circuits (at least not in OR)? .... Older circuits ,by the way they are ran can not support afci breakers .... How so, if they're not multi-wires? Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted February 14, 2016 Report Share Posted February 14, 2016 How so, if they're not multi-wires? Even without MWCs, a lot of electricians in the bad old days would habitually connect neutral wires from different circuits together if they would happen to land in the same box. This will cause no end of headaches with retrofitted AFCIs. Quote Link to comment Share on other sites More sharing options...
Jack Davenport Posted February 15, 2016 Report Share Posted February 15, 2016 [br Out of curiosity, why is it that when doing a panel change out, AFCI protection isn't required for existing circuits (at least not in OR)? .... Older circuits ,by the way they are ran can not support afci breakers .... How so, if they're not multi-wires? well like you stated - multi-wire circuits are the big issue then there is the issue of bare grounds and neutrals touching somewhere in the circuit, as well as neutrals of different circuits tied together. How about those staples driven a tad bit too tight, or that knob & tube rewire that left some of the knob & tube in place Marc Quote Link to comment Share on other sites More sharing options...
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