How to Install a Sub Panel in the Basement
- 1). Plan the location of the subpanel and all wiring from the main electrical panel in the basement on paper. Refer to the National Electrical Code of your area to determine minimum standards when choosing electrical wiring and subpanels. Failure to meet or exceed regulations and code can increase the risk of fire hazards and injuries. Contact local building authorities or licensed electricians if you are unsure of code requirements.
- 2). Disconnect power to the main electrical panel and all circuits, by placing all circuit breakers in the off position. Test for electrical current by using with the volt meter on the wiring connected to the circuit breakers. Avoid working on live wires and circuit breakers to prevent the risk of serious injuries.
- 3). Use the drywall saw to remove a rectangular section of drywall between wall studs for the subpanel. Use the power drill and metal screws to secure the subpanel to the middle third of the stud. Use the screwdriver to pry the circular metal disks, known as knockouts, from the sides or bottom of the panel, and install the cable clamps. Remove the knockouts on the panel cover for each circuit breaker installed.
- 4). Cut the electrical cable to length by using the wire cutters. Run the cable between the main electrical panel and the subpanel. Run the ends of the electrical cable through a cable clamp into the panels. Use the wire strippers to remove the ends of insulation from the wiring within the cable jacket. Connect the white neutral wires and copper or green grounding wires to the appropriate bus bars within the panels, and connect the black hot wires to the circuit breakers. Secure the wires in place by using the screwdriver to tighten the screws.
- 5). Attach the circuit breakers to the panel with the screwdriver, or by sliding the metal tab and clamps onto the hot bus bar. Install circuit breakers that are made by the same manufacturer of the subpanel to ensure all parts fit securely. Use the screwdriver to attach the panel covering. Restore electricity and test the wiring with the volt meter, to ensure all connections and circuit breakers work properly.
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