Afternoon all.. Settling down to a fancy coffee from the new fancy coffee machine and as you do on a sunday afternoon I started thing about bonding . Quite often the kitchen fitter, DIY homeowner etc has built around the Main bonding connection for the water and it is neither visible or accessible. It can be costly for a new bonding cable to be run especially when there 'may' already be one but it is just not visible. Previously if I saw a 2 x 6mm or 10mm cables leaving the CU (as well as the Main earth) and the water incoming pipe tested as 0.05 ohms or less to earth I would class it as having a satisfactory bond. However, it rarely comes back as 0.05 ohms or less so a new cable is needed unless I take part of the kitchen cabinet apart and see the cable. Also, the 10mm cable leaving the CU may not actually go to water and the water may just be joined to another earthed pipework with a 1mm somewhere thus giving a good reading to earth. What do you lot do when you cant see the Main bond clamp? Cheers everyone.