An electrical connection assembly includes an electrical box including a housing having an internal surface defining an internal volume of the housing. An electrical connector is positioned outside the internal volume of the housing and fixed to the housing with a fastener. The housing includes an aperture having an opening defining an insertion path extending from a location external to the housing to a location within the internal volume of the housing. The assembly includes a plug having a flange portion and a plurality of resilient legs. A bracket for mounting an electrical box to a structure includes a corner connecting a first flange with a second flange. An assembly including an electrical box and a bracket is also provided.