Abstract: Apparatus, systems, and methods related to an electrical wiring installation system that has a clip assembly and at least one post coupleable to the clip assembly. The clip assembly has an upper member with a first clamping surface and a threaded receptacle, and a lower member with a second clamping surface and an aperture. The upper member and the lower member are mateable such that the first clamping surface faces the second clamping surface. The post includes a base with a wire engagement member and a threaded shaft extending from the base. The threaded shaft is configured to pass through the aperture of the lower member of the clip assembly and threadably mate with the threaded receptacle of the upper member of the clip assembly.