Yes, electrical outlets are typically installed before drywall during the construction or renovation of a building. The process typically involves a sequence of steps as follows:
Electrical rough-in: During the early stages of construction, after the framing of the walls is complete and before drywall installation, an electrician performs the electrical rough-in. This involves running electrical wires through the walls to the locations where the outlets, switches, and other electrical fixtures will be installed.
Outlet box installation: Electrical outlet boxes are affixed to the framing members (studs) of the wall in the designated locations where the outlets will be located. These boxes serve as secure housings for the outlets.
Wiring connections: The electrical wires are connected to the outlets within the outlet boxes, and the wires are left with a little slack to make it easier for the electrician to connect the outlets later.
Inspections: Before proceeding with further construction, electrical rough-ins often undergo inspection to ensure they comply with building codes and safety standards.
Drywall installation: Once the electrical rough-in is complete and inspected, the drywall is installed over the framing, including the electrical outlet boxes.
Outlet and switch installation: After the drywall is in place, the electrician cuts openings in the drywall at the locations of the outlet boxes. They then install the electrical outlets, switches, and faceplates.
By installing outlets before drywall, it's easier to run the electrical wires through the wall cavities without interference. This method also allows for adjustments or repairs to the electrical components if needed before the wall is completely finished.
It's important to note that electrical work should be carried out by a qualified and licensed electrician to ensure proper safety measures and compliance with local building codes.