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Shower with no RCD or supplementary bonding

MrJack96

I have been round to a relatives flat and seen he has an old Wylex board with MCBs. His bathroom has no supplementary bonding from what I can see and no RCD protection for his electric shower. how potentially dangerous is this? I know the circuits are fairly short and can see main bonding in place Can only really think if the R2 values are low enough touch voltages should end up being kept low? 

 

 

 

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  • 0
    So is my assumption correct: 


    if say there was water tracking down from a live conductor to earth the VD across the water due to its resistance would be most of the voltage this is why we only would feel a tingling? 


    is the only real problem in this scenario if we touch two earthed parts when wet and one has a fault on so the current then goes through us and the amount that does depends on the resistance between the two earthed parts so if is small ie 0.05 ohms the majority of the current will be flowing through them and not us meaning we’d be fairly safe?
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  • 0
    So is my assumption correct: 


    if say there was water tracking down from a live conductor to earth the VD across the water due to its resistance would be most of the voltage this is why we only would feel a tingling? 


    is the only real problem in this scenario if we touch two earthed parts when wet and one has a fault on so the current then goes through us and the amount that does depends on the resistance between the two earthed parts so if is small ie 0.05 ohms the majority of the current will be flowing through them and not us meaning we’d be fairly safe?
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