The answer depends on specific conditions—outdoor use is possible, but it requires choosing the right type and following proper installation and maintenance rules. This article will clarify these key points to help you use them safely outdoors. 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. These boxes provide a safe and secure location for making connections, splicing wires, and mounting outlets, switches, and other electrical devices.