Cables used in concealed wiring shall be similar to that described in 9.1 above. The cables shall be concealed behind the plaster of walls and ceiling slab or run in the ceiling spaces. The cables shall be secured by lead alloy saddles or cleats. Not more than 10 cables shall be cleated together using the same saddle or cleat.
Saddles or cleats shall be fixed by high tensile nails and spaced at not more than 150 mm apart. Where cables are run in ceiling spaces they shall be protected by galvanised steel conduits and wired as in 9.1 above.
A spare concealed conduit shall be provided from the distribution board to the ceiling space for future extension. The spare conduit shall be plugged at the ceiling end with removable plug.

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