Electrical installation in an outbuilding

[Nick]

Nick, you are confusing RCBO and RCD. RCBO is an RCD and MCB in the same device.

Not confused at all - I was asking if you could protect each half of the unit with an rcbo, i.e. Combine the overload protect for each half with rcd protection, then use a seperate mcb for circuit.

In your scenario of using an rcd in each half, where is the fuse for the cu in the workshop, or are you relying on the one back at the house?

Thanks