What Type of Box Do I Use?
Sometimes an electrical box is needed on the outside of your home, garage, or building. For this reason, a special type box and associated accessories must be used. Weatherproof boxes are the solution to achieving a weatherproof connection point outside. These boxes, when connected properly, seal out the weather without worry of moisture getting in and shorting out the connection.
Weatherproof Box Options
There are a couple of methods of connecting a receptacle on the outside of your home. One is to cut a regular junction box into the interior of the wall and only expose the box opening to the outside. Then, after you add a ground fault circuit interrupter outlet, cover the outlet with a gasket and a cover plate to seal the connection to the wall. Another method is to attach a weatherproof box to the wall using the mounting brackets provided within the box and a couple of screws to attach it firmly to the wall. These mounts are external so there are no holes through the interior of the box. This eliminates the possibility of moisture getting into the box.
A Special Cover Plate for Extension Cords
The two previous options are great for keeping the weather out of the outlet when nothing is plugged in, but what about when there is something plugged into the outlet and it is raining? So can I only use the outlet when it is dry outside, you say? No, no! There is a much better way to solve this problem. In this case, flip-up covers are a great option for installing extension cords to an outside outlet. These covers are designed with a deep lid and grooves in the bottom of the lid so that extension cords can run out the bottom of the lid without having the lid open and exposed the outlet to the weather. These plastic covers are pretty durable and usually come in a clear or smoke-colored lid.