4 Things to Know About Weatherproof Cord Covers
A plastic bag is not a weatherproof solution It traps moisture and wind blows it off, leaving your connection exposed to rain and snow.
Use a purpose-made rubber or vinyl cord cover These look like small tents or U-shaped domes that fit over the connection. They cost $5–10 at any hardware store and last for years.
If you must improvise, use a zip-lock bag with the cord coming out the bottom Tape it tight and create a drip loop so water runs down the cord, not into the connection. This is a temporary fix, not a permanent one.
Spend the five bucks to protect your breaker A proper cord cover prevents short circuits and electrical hazards. Your breaker will thank you.