QUICKY question to resolve a dispute, haha! (a clue would be... a DSO / other near a sink)...

davezawadi (David Stone):

I am not a follower of the "I need a rule (guide, advice, magic wand etc)", in this kind of case. These "rules of thumb" are all very well, but as all appliances have a cable longer than 300mm, just what is this number supposed to represent? If it is a kettle, then earth cable failure and then a fault to case is equally dangerous if the socket is 2m away, given accidental contact. Splashing with water is not really very dangerous, you may get corrosion inside the socket pins but not much else. The safest thing in a kitchen is to use plastic plumbing, to ensure the sink is not bonded to Earth, hide all the appliances behind wood doors, and having a non-conductive floor covering. Under these conditions, it is very difficult to get a shock whatever happens, and if everything is RCD protected is unlikely to cause injury even if a shock could be obtained.

Food for thought! BUT, here I go... getting into trouble, AGAIN!


BUT, I know we've all heard about 'introducing a potential where a potential may not exist' BUT... if the property has copper  plumbing to the sink then why do we not have any earth bonding there, nowadays? What happened, (like yeah man... I know about 'parallel earthing'), to 'cross bonding' as I did this for decades, hahaha... am I gonna get shot down!!!?? 


Don't be too hard on me, I'm old!!! ?


regards...

davezawadi (David Stone):

I am not a follower of the "I need a rule (guide, advice, magic wand etc)", in this kind of case. These "rules of thumb" are all very well, but as all appliances have a cable longer than 300mm, just what is this number supposed to represent? If it is a kettle, then earth cable failure and then a fault to case is equally dangerous if the socket is 2m away, given accidental contact. Splashing with water is not really very dangerous, you may get corrosion inside the socket pins but not much else. The safest thing in a kitchen is to use plastic plumbing, to ensure the sink is not bonded to Earth, hide all the appliances behind wood doors, and having a non-conductive floor covering. Under these conditions, it is very difficult to get a shock whatever happens, and if everything is RCD protected is unlikely to cause injury even if a shock could be obtained.

Food for thought! BUT, here I go... getting into trouble, AGAIN!


BUT, I know we've all heard about 'introducing a potential where a potential may not exist' BUT... if the property has copper  plumbing to the sink then why do we not have any earth bonding there, nowadays? What happened, (like yeah man... I know about 'parallel earthing'), to 'cross bonding' as I did this for decades, hahaha... am I gonna get shot down!!!?? 


Don't be too hard on me, I'm old!!! ?


regards...