The inherent power supply in my workshop requires replacement? I believe from reading threads in these forums that what has previously been installed (not by me) is inadequate or just wrong? So from a 13amp fused spur inside the house, an SWA is connected to a plastic consumer unit in the shop. So is it the case that the consumer unit in this situation is pointless as the fuse in the spur will be first to react? I am open to changing to a direct connection to the main consumer unit and then to an appropriate metal-clad unit in the shop. As ever any advice will be valued Marcus.