What are the main types of electrical boxes used in installations?

The correct answer highlights three distinct types of electrical boxes that serve specific functions in electrical installations. Outlet boxes, commonly used for installing electrical receptacles, provide a safe enclosed space for wiring and connections associated with electrical outlets. Switch boxes are specifically designed to house switches that control lighting or other electrical devices, ensuring that the wiring connections are secure and accessible. Junction boxes play a critical role in electrical systems by connecting various wires together, allowing for a safe transition and distribution of electrical current from one circuit to another.

Understanding these categories is essential for proper electrical installation and safety. Each type of box is suited for its purpose, facilitating code compliance and operational effectiveness in residential and commercial electrical systems.