Because water can get into the outlets. In fact, you risk damage to your portable generator and electrocution if the electrical panel gets wet. Some portable generators have GFCI (ground fault circuit interrupt) outlets. These outlets shut themselves off when they get wet.

How do you protect a portable generator from rain?

Keep it away from any doors and windows. Never run it in a garage, even if the doors are open. Instructions for a portable generator warn you not to run it in the rain. To protect it from moisture, the Consumer Product Safety Commission recommends operating it on a dry surface under an open, canopy-like structure.

Will rain ruin a generator?

Running a generator in the rain, snow or on wet ground requires an abundance of caution. Water can ruin the outlets and wiring of your generator, as well as work its way into the fan, alternator and fuel, causing further damage. ... Don't run a generator in the rain, unless it's covered or enclosed.