My father wishes to replace his electric shower as part of a bathroom refurb. It is currently connected directly into the old type of fuse box (fuse wire). He lives in a bungalow and has been given conflicting info from 2 electricians. One had said that a new shower consumer unit (between the load and the fuse box will satisfy the new regs. The other has said he must get a complete split load consumer unit fitted to replace the existing fuse box). Can anyone help please. The only work he plans is to physically replace the shower and retain the existing 10mm cable and pull switch. Thanks.