I would like to route a couple of electric cables through the garden below ground. The cables will run in plastic conduit and will be buried to a good depth with concrete protection over the top.
Is there a limit to how many cables can be fed through one piece of conduit? I understand that temperatures can increase if several cables are grouped close together and wondered if this would place a limit on the quantity in a plastic tube. Is there a recommendation for the diameter of the tube required?
By the way, one cable is a mains feed to an outbuilding for lights and sockets and the other is just for low voltage garden lights.
Thanks in advance.