Outbuilding on non RCD side of C/U?

[Nicebloke]

If running power to an outbuilding (usually a garage at the bottom of someones garden), I normally run it from the non RCD side of the C/U in the house and then put a 2 way RCD protected C/U in the garage. I was however, told that I can no longer do this as it must be connected to an RCD in the house C/U. I was also told that any outbuilding more than 20 metres away from a house must have it's own TT system?

 

[Midwest]

I'm going to start using dual RCD boards with 100mA s type upfront or DP RCBO's from now on on TT. Thanks @Leesparkykent for that, we learn something every day

Yep, I learnt the same thing myself, directly from this forum. We are always learning, no matter how old you are (sorry about the ageist thing Telectrix)