I recently bought a easi boost2 shower pump - and I'm a bit wary of fusing- it states on the box \\\"needs only to be connected to a 13amp fused spur\\\" and yet inside the manual \\\" must be connected to a 230 volt ac supply, fused at 3 amps i've hard wired it to a fused spur -switched fused isolator but have not fitted which fuse.