An electrical box designed for installation in existing walls, often referred to as a remodel box or a cut-in box, facilitates the safe and secure mounting of electrical outlets, switches, and other devices within a finished wall where running new wiring is impractical. These boxes are typically plastic or metal and feature adjustable mounting wings or clamps that grip the drywall or other wall material from behind, holding the box firmly in place. For example, replacing an old, damaged outlet in a living room necessitates such a box if the original installation predates modern wiring standards or the existing box is not reusable.
The utilization of these specialized electrical boxes offers several advantages. They minimize disruption and demolition, conserving time and resources compared to situations requiring new wiring to be ran from the breaker box. Their design allows for quick and easy installation with minimal tools, making them suitable for both professional electricians and experienced DIYers. Historically, these boxes evolved to address the growing need for electrical upgrades and modifications in older homes and buildings without extensive structural renovations.
