Addresses CB AFCIs. AFCIs are available as circuit breakers and as receptacles (Outlet Branch Receptacle [OBR]). CB AFCIs are tested and Listed to UL-1699 requirements. Both types can be installed per the 2014 National Electrical CodeĀ®. A stand alone paper is available for each AFCI type. This paper addresses CB AFCIs. The OBC AFCI is described in a similar document available at www.nema.org/standards/view/outlet-branch-receptacle. Cross-referencing the two papers provides the user/specifier/installer with all the important facts to decide which type best suits the intended installation.