For an outdoor water filtration receptacle, what type of cover should be installed?

• A. Indoor flush cover
• B. Nonmetal cover
• C. Hinged cover
• D. Weatherproof cover

Answer: (D)

Outdoors, moisture exposure is a constant concern, so the cover on an outdoor receptacle must be designed to keep water out and protect the wiring. A weatherproof cover is built for wet locations and provides a gasketed seal that sheds rain and splashes, allowing the receptacle to stay dry even in rain or sprinkler spray. Indoor flush covers aren’t rated for outdoors, and a plain nonmetal or hinged cover doesn’t guarantee weatherproof protection. If the receptacle will be used while plugged in, you’d typically pair a weatherproof cover with an in-use design to maintain protection while in use. That’s why a weatherproof cover is the best choice.