A Builder is extending a house and expects to unearth a SWA cable running from the house to a detached garage. I can see the SWA terminates at a garage consumer unit but can't see it starting at the CU in the house. I plan to fit a new CU and new SWA to the garage (with a new Garage CU) as part of the project. Just for now I need to know how to terminate the SWA (probably into an waterproof box) when its unearthed. The circuit it's on is a 32A ring which supplies sockets in the house as well as the garage CU . I have isolated the supply so that the SWA cable won't be live when its located.