Originally Posted by Natureboy
I should have mentioned, I keep my trailer outside at my hunting property all year long, thru the winter as well. I need to make sure there is no chance for moisture, or a bad connection. That is why I am frowning on the extension idea. Thank you tho, for the comments.
That is a concern, but it isn't difficult to address.
A 120 volt 30 amp connection needs to be kept basically dry, not moisture resistant. Keep the plug connection elevated above any possible water or snow level with some sort of rain shield over it. That will provide the protection you need.
My vision is something as simple as a little wooden tower, wooden stake, or wooden cribbing with a upside down plastic bucket over it. If the cords go up under the bucket then the rain will follow/shed down the cords to stay away from the open parts in the connectors.
Many people make the mistake of trying to seal things up completely with electrical tape or other methods. What generally happens with those methods is the water gets in, but then doesn't drain out. In my mind that is worse than having an elevated protected connector.
If you do replace with a longer cord be certain to verify that the new cord will properly push into the intended storage space available. Some replacement cord is less flexible and may not allow the curves needed to nestle in.