The answer to 'difference between junction box' is that a junction box is a type of electrical box used to connect and house electrical wiring. Junction boxes come in a variety of sizes and materials, and are designed to safely enclose wire splices and connections. They provide a protective enclosure to prevent electrical shocks, fires, and other hazards.
The main differences between junction boxes are their size, material (metal or plastic), and the number and type of openings they have for running electrical cables and conduit. Larger junction boxes are typically used for main electrical panels, while smaller boxes are used for branch circuits and individual devices. Metal boxes are more durable and fire-resistant, while plastic boxes are lighter and easier to install. The number and placement of knockouts (openings) on the box determine how many cables or conduits can enter and exit the box.