Hi Colin
Im my eg I took 1500W for the vac, but yours is 1200W+ 2000W router
For you, that's a total of 3,200Watts in all. 3200/230=13.9A. (A 13A fuse is made to pass 13A, not blow at 13A) I bet the plug gets hot though...
It's better to add up amps from the label, if the vac is really 1200W...