A few years back I had a Spark to install RCBO's and check the electrics. He installed all RCBO's in the CU and fitted an earth cable to the copper gas pipe on the outlet of the meter. The gas meter and electric meter are near with a gap between. He said the cable must be clamped within 600mm of the gas meter. The copper gas pipe runs through the electric meter cupboard. He clamped the earth cable inside the electric meter at just 600mm. Another Spark has said the earth cable has to run into the gas meter and be clamped right at the meter outlet because its has to before any "joint". The first Spark who did it said it has to be before any "junction", which means a tee. There is no tee. Running an earth cable back to the gas meter means messing up the decorations and it will look ugly on the surface.
Who is right?
Who is right?