Electrical installation often is characterized in one of two ways: new work, or new construction, and old work, or remodeling. The main difference is that with new work the framing is exposed, so it’s much easier to install things like boxes and wiring, while old work requires surgical cuts in drywall and drilling through framing with special bits to minimize the amount of patching required. Additions and major remodels can involve a lot of new work because old walls are being removed, new ones are being framed or things are generally torn up anyway.
