Patent ID: 8040644

Claim:
A power distribution system comprising: a plurality of different zones; and a plurality of different arc fault circuit interrupters, a number of said plurality of different arc fault circuit interrupters being in each of said different zones, wherein each of a plurality of said plurality of different arc fault circuit interrupters comprises: a first terminal, a second terminal, separable contacts electrically connected between said first terminal and said second terminal, an operating mechanism structured to open and close said separable contacts, an arc fault trip circuit cooperating with said operating mechanism, said arc fault trip circuit being structured to trip open said separable contacts responsive to an arc fault condition, an inductor electrically connected in series between said first terminal and said second terminal, and a capacitor including a first lead electrically connected between said inductor and said second terminal, and a second lead electrically connected to a ground or neutral conductor, wherein said inductor and said capacitor are structured to cooperate with a power circuit impedance downstream of said second terminal to form a filter trap circuit, wherein said arc fault trip circuit comprises a sensor structured to sense current flowing between said second terminal and said capacitor; and wherein said filter trap circuit is structured to concentrate a first arcing signal to the sensor of said arc fault trip circuit from a first arc fault condition in a first one of said different zones downstream of said second terminal and to reduce a second arcing signal to the sensor of said arc fault trip circuit from a second arc fault condition in a second one of said different zones upstream of said first terminal.