Don't be silly as that would keep tripping out too surely?
I just so happened to have a hosepipe handy and though hmmm that should do the trick so cooled all the extention lead down unwound from the reel with cold tap water. In the proccess the cold water also cooled down the roasting concreate pavers it was on too... Worked a treat
I'm also use to working in the rain by the way so never had any issues with the reel tripping out because it got too hot before.