elecbob, IMHO, They should be put on a dedicated branch circuit due to endless possibilities/scenarios that could arise causing failure of these life safety devices. However, in my area the AHJ has adopted the 2002 which require the smokes to be on AFCI if located in Bdrm. Therefore the cost effective method thus far has been to include them on one of the Bdrm AFCIs. BTW,JMHO Regards, Andrew
