it will depend on the nature of the project, if it is dry area you can use armoured cable direct burried without PVC ducts,and ensure there will be no any future excavation.
As per my knowledge & experience better to use unarmoured cable with PVC duct, for future protection & safety.
it will depend on the nature of the project, if it is dry area you can use armoured cable direct burried without PVC ducts,and ensure there will be no any future excavation.
As per my knowledge & experience better to use unarmoured cable with PVC duct, for future protection & safety.