Generators - and wet weather

Hi all :)

Just wondering how owners of generators use them in inclement weather in regards to safe operation when its raining.

We recently bought our gennie only to use on our property in lieu of power not being available to the temporary caravan we have set up as home - and especially during winter. It worries me using it in wet weather conditions - given that these things output 240VAC. It has to be covered so that it doesn't get wet - but also needs to be able to breathe. I'm also not sure that I like the idea of an extension cord snaking around the ground outside in the wet...or is this worry a furphy as long as both ends are dry?

What do people do as far as a gennie cover when it's raining? I'm thinking of using our (departed) dog's kennel as a permanent cover - but it's made from steel and isn't really well...uhmmm... insulated. It has a big entrance, so the exhaust could be pointed out the entrance leaving it sucking clean air to burn from behind.

Any ideas?

Cheers
Chris