That looks as rough as a badger's minge.
Exposed cable entering into electric shower - dangerous?
- Thread starter Michl
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I don't think I've ever seen 'a couple of battens' mentioned in any electric shower installation manual.
But surely if a NEW shower unit is fitted the supply should be brought up to current standards with an RCD supply?
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It would be better to build a bulkhead off the wall and tile it - then all services can be hidden in that and brought into shower unit from behind!
For a change of appliance only the wiring need not be brought up to current standards. Even if the shower supply is RCD protected though, other circuits might not be. This would be common under 16th Edition split load with sockets and shower on RCD and the lighting not RCD.
I accept the reasons for supplementary bonding, but looking at the picture the main cable coming in appears to be Black ( indicating that it could be rubber covered) it certainly does not look GREY IMO, maybe its just a poor picture.
It's grey, presumably standard 6mm t&e.
"Even if the shower supply is RCD protected though, other circuits might not be. This would be common under 16th Edition split load with sockets and shower on RCD and the lighting not RCD"
Could you explain how the secondary earth connection makes it safer?
"Even if the shower supply is RCD protected though, other circuits might not be. This would be common under 16th Edition split load with sockets and shower on RCD and the lighting not RCD"
Could you explain how the secondary earth connection makes it safer?
It is not an earth connection, it is supplementary bonding (although in practice it will usually connect to earth as the circuit protective conductor{'earth'} in each T&E cable will be supplementary-bonded in the bathroom and earthed at the supply).
The bonding is to prevent a voltage difference coming in to the bathroom from outside. Eg if a copper pipe and cable run through the same notch in a joist under the floor and the cable is abraded to the point where the pipe becomes live, there could be a voltage difference between that pipe and any other pipe in the bathroom, which could lead to 240 volts between the hot tap and the cold tap at the basin. Supplementary bonding means that the hot and cold pipes would be joined together electrically so, although they might both be live relative to earth, there would be no voltage difference between them and so no chance of a hand-to-hand shock through contact with the metal taps.
Hand-to-earth shock is a lower risk as it doesn't cross the heart line and there is usually a higher resistance standing on a somewhat insulative floor than grasping a metal tap.
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I'd love to know where you get your reference material from Dan?
Last badger I saw was by the a64.
Can't comment on how rough it's minge was but I can confirm it was definately very flat chested
Goes back to the great sheep vanishing of '93. Times were desperate with a rural upbringing.
That is something I had not considered.. In the days before plastic plumbing all pipes, hot and cold, were conductive and joined together at various places in the system. But now odd sections of copper pipe at the ends of plastic pipe runs will be electrically isolated from each other and from earth. The scenario of a damaged cable in contact with a copper pipe making one tap Live is possible.
That is not what bonding is for.
No, you're right... It's for priming a background as a first coat plaster prior to a skim plaster
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