supply to zoo!

[sparkattack]

is there any reason why the metal consumer units only come with the main isolator switch in them and not the dual RCD? do they expect you to use rcbo's?

 

[Riggy]

is there any reason why the metal consumer units only come with the main isolator switch in them and not the dual RCD? do they expect you to use rcbo's?

I guess it's because metalclad is generally used in commercial installations where the use of RCD incomers is unusual.