Good morning
I always thought that if you are installing cables underground (e.g. for external lighting, Vehicles Chargers, submains to another building etc) you always use SWA cables because this offers mechanical protection.
Is this coming from a specific regulation though?
Because I have someone saying I could use double insulated cables in the underground ducts if its a short run.
However this feels odd.
Is there any regulation that I can refer to?
Sorry for the ignorance
Cheers
