Is this how it's done ?

[Eco Chap]

I can't believe 150mm is deep enough! Is it running down the garden? It should be at least 600mm with a yellow "cable below" warning tape halfway down.

The 600mm is only a recommendation. It's up to the designer to assess the depth of the buried cable. If its not considered to be on agricultural land I.e. a crop field or passing under a vegetable patch ect then bury it as the designer chooses. Mind you can never tell what tomorrow brings so 600mm is always a good recommendation

 

[Eco Chap]

Carefull - before you start specifying minimum depths.

BGB says 'should be at a a sufficient depth to avoid being damaged by any reasonably foreseeable disturbance of the ground' - the only place where the regs specifies minimum depths is agricultural, camp sites and marinas.

If buried at a depth of 150mm then whoever did it needs to have a good explanation to say why 150mm is sufficient.

Beaten to it

 

[jason121]

Because digging is hard work