Conduit vv Sheathed

[NoSparks]

Can anybody compair the relative merits of sheathed cable vv circuits run in conduit. Or put another way, when should I use conduit and when should I use sheathed cable?

Thanks in advance for you kind contribution.

 

[UNG]

Metal or plastic conduit ??

 

[Guest123]

Far superior mechanical protection with an earthed metallic conduit.