Quote Originally Posted by Isetech View Post
If a 2.5 mm min. wire size is required for earthing and bonding of a geyser, how is it possible that inspectors are passing inspection reports and issuing COC's for properties which are fed with a 2.5 mm twin+E, the earth wire in the twin is certainly not 2.5mm and the "certified twin+E" being sold on social media platforms for a mere R550, I dont believe the red and black is 2.5 mm copper.

Old installations will still pass and in some cases where 2.5 mm house wire was used, in most cases a 2.5 mm surfix or twin is used.
I fully agree with you Isetech the crap wire twin+E sold are not copper most probably more tin than copper as the live , neutral and earth conductors are extremely soft even the outer insulation is very soft. I agree geysers should have 2.5mm earth conductor back to main db earth bar and bonding of hot and cold water pipes needs to be done at geyser don't rely on readings best practice bond hot and cold water pipes at geyser with bamba strap and use Norsk or Surfix with seperate 2.5 mm back to db earth bar.