I've just finished re-building a couple of resort bungalows here in sunny Thailand.


The bungalows were wooden structures on 2m concrete posts (bungalow on sticks), the outer shell and roof were teak and Burmese ironwood which were structurally sound but the floor was "cheaper timber" which the termites got.


So the floor is now a welded steel frame sitting on the concrete posts with "Shera board" (cement board) flooring.


Supply is a TT submain on a 10mA RCBO from the house which is TNC-S, mostly 2 pin outlets except for the fridge which is on a local ground rod.


So, should I earth the steel, either to the existing rod or to its own separate rod.


No wet rooms in the bungalow although there is an exposed balcony, all wooden handrails etc.


Thoughts.