Might be a good idea to use a unit like this if you're going to use a caravan-type lead.
As I said to my wife as I was looking at fire extinguishers, which she seemed dubious about buying, "Well, do you want to wait until we really need one?"
Mrs Glad, I suggest, wait until you buy a proper electric unit. Do without this time. Better safe than sorry.
------------- New Year: Hesketh Bank
Feb/March: Red Squirrel
March: lakes
June: Morecambe
Aug: Lake District(not camping camping)
October: Red Squirrel
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.