[dubcanada]

All cabling is in conduit, so if it fails you either fix the gang box if that is where it failed normally as you do in US. If the wire fails you replace it by pulling it through the conduit and fishing in a new one. It's actually a fairly decent setup compared to our standards. They also typically use a installation layer, which is a furring wall where they run these cables, meaning you don't need to mess with vapour barrier.

[2toxic]

how is pluggable electric in conduit is going to work in prefabbed walls? you pull all wires through preinstalled conduit during wall placement?