Yes, outdoor electrical boxes are essential for outdoor outlets, lawn tools, and lighting installations. To ensure safe operation: Use a weatherproof outlet cover. An outdoor electrical box (also known as a junction box or weatherproof box) is a specially-designed enclosure that houses electrical connections such as receptacles, switches and wire splices. This article will clarify these key points to help you use them safely outdoors. Not all junction boxes work outdoors, but those. Guide to Outdoor Junction Boxes — everything you need to know about choosing, installing, and protecting outdoor electrical connections.