Apprentice electrician here and I would really like help on clearing up a confusion about bonding. I'm coming towards the end of my apprenticeship and have always been told that the maximum reading for a bonding to water and gas is 0.05ohms. I have been fine with this for the last 2 years but have this weekend been confused as GN3 and 7671 doesn't actually state this. Any help clearing this up you be amazing thank you. I know why we bond and what it is used for it's just where the 0.05 comes from.