Hi guys. I have an old out building that has been knocked down and in it’s place an extension is being built. The old out building had a ring and a lighting circuit with water heater for a shower all fed From a ccu that came from the main house through 10mm swa. The extension is now going to be fed from this same ccu. However I want to move the original position of the ccu. Can I extend this SWA? And how??