An electrical junction system includes a junction box specially configured to enhance electrical circuitry installation in buildings or other structures. The junction box is attached to a wall stud or other structure and electrical power is routed to the box. Installation of utility modules (such as a receptacle or switch) into the junction box requires no connection of wires. In addition, the depth at which the utility module is secured within the junction box cavity is advantageously adjustable to enable the face of the module to be mounted at a desired location, such as flush with drywall.