I'm totally convinced you are correct, however would it be fair to the customer to install something technically under rated.
It would be like running a 13A rated accessory at 16A
Out of interest how did you attatch the wires to the incomer? did you just put a wire in the same terminal as the busbar aseembly? did you use a lug of some sort?
No. However, that issue probably wouldn't arise if the manufacturer's 'ratings' represented 'the truth', rather than being a conservative/'backside-protecting figure!
It would, although I'm not sure what sort of 13A-rated' accessories you had in mind. The main ones I can think of are BS1363 plugs/sockets and FCUs, and if you were 'running' those at 16A you'd be 'overloading' a 13A fuse as well as the accessory.
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