Who's responsible?
This isn't an issue we have over here, but speaking for myself, if I were the one installing the cord I would make sure that the jumper is present if I was fitting a 3-wire cord or absent if a 4-wire.
Judging by the number of times this comes up however, I think if I were the EC actually installing the range I would always want to check the connections no matter what type of cord had been pre-fitted.
