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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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    I prefer to see an RCD too, it trips before faults get out of hand, but having also lived with many showers without, both nice ones here and wilder looking ones abroad, including some that look similar to that photo I posted with twist joins and so on, I'm trying to reassure the OP that even when it goes wrong and is not earthed it is not that dangerous to the end user so long as the water is of drinking grade. We tend to assume that a non-compliance with the latest regs == lethal danger, and it is not necessarily so.

    And I agree the older RCDS and Vo ELCBs were very well engineered, but in modern money at  £100s  we'd not pay. (and most folk  did not want to pay for them back then either…)

    Mike.

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    I prefer to see an RCD too, it trips before faults get out of hand, but having also lived with many showers without, both nice ones here and wilder looking ones abroad, including some that look similar to that photo I posted with twist joins and so on, I'm trying to reassure the OP that even when it goes wrong and is not earthed it is not that dangerous to the end user so long as the water is of drinking grade. We tend to assume that a non-compliance with the latest regs == lethal danger, and it is not necessarily so.

    And I agree the older RCDS and Vo ELCBs were very well engineered, but in modern money at  £100s  we'd not pay. (and most folk  did not want to pay for them back then either…)

    Mike.

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