Instead, he recommends purchasing weather-resistant cords for outdoor use and implementing a weatherproof outlet box whenever possible.

This extension cord is designed for heavy duty outdoor applications, allowing operators to extend power to equipment in outdoor or remote locations where stationary weatherproof outlets are not ...

The installer of this fan took a shortcut by hard-wiring a lamp cord having a built-in rotary switch into the round weatherproof box and directly to the lamp cord to the leads of this small fan.