All Canada/USA 110v cabling has a paper-covered earth, so is not legal here and must be changed. Yes you have to run new cables, but depending on the rig not as bad as it sounds.
Apparantly it is legasl here to use a step-down transformer, as long as it can be contained within the unit it is powering. So for a fridge, if the transformer is only powering the fridge and it is 'within' the fridge (i.e. out of sight and not just sitting next to the power point) you can use one.
Yes I thought step-down transformers were illegal too (as far as having an electrical wof goes) but apparantly not.
As for all posts, please don't accept my post as a legal statement, get it checked out!