A mounting system, which secures portions of a wiring system to an electrical box, includes a mounting rack having a frame to which a portion of the wiring system is supported and a clamping member that is movable relative to the frame and engageable with an electrical box such that the mounting rack is configured to be coupled to electrical boxes having varied sizes. The mounting system also includes a conduit connector that is configured to be coupled to a conduit of the electrical box for supporting thereon another portion of the wiring system.