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Electrical boxes keep wire connections safe from short circuiting and catching fire. Some are designed for indoors, while others are outdoor electrical boxes. They’re typically crafted from either plastic or metal. Both materials have their advantages. Metal boxes are durable and can be joined to add more devices, while plastic boxes are non-conductive and affordable. When installing electrical boxes indoors, metal boxes are suitable for exposed applications while plastic or PVC can be installed behind drywall.
There are many different shapes and sizes of electrical boxes, so figuring out which type you need is key. Luckily, the shape of the electrical box can help determine what it’s used for. If you’re looking for a basic switch box, rectangular is a safe bet. To house two devices, go for a square electrical box with a double-gang configuration. Installing a smoke detector? Opt for a round or octagonal electrical box. A ceiling box is a good fit for heavy fixtures like fans or chandeliers. When installing any type of electrical junction box, be sure to have the right covers, supports and brackets on hand.
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