An electrical fixture system comprises: a. an electrical fixture assembly; and b. a piercing tool. The electrical fixture assembly comprises an outlet junction member for mounting in a wall or a ceiling or a floor, and an electrical fitting. The outlet junction member and the electrical fitting are each provided with at least one mutually compatible electrical connector element. The outlet junction member has means for connection of the at least one outlet junction member electrical connector element to mains electricity. The piercing tool is removably connectable to the electrical fixture assembly and the tool is shaped such that it penetrates a wall board pressed against the tool to create an opening in the wall board. The at least one outlet junction member electrical connector element is substantially aligned with the opening in the wall board.