HOT TUBS ANY VIEWS OR ISSUES?

I know I have told the story several times before on this forum.


Around fifteen years ago I was fitting a kitchen and doing the electrical work at a house with an overhead two cable supply and a DIY TNCS earth connection, a big choc-block terminal in the neutral tail after the meter, don’t you just love people who do things like that ?


In the garden there was a big Koi pond with a brick wall around it bringing the pool up around 18” above ground level, the pool being a lot deeper with a plastic liner along with all the kit and caboodle.


The lady of the house was sat on the wall feeding the fish and one come up to take some food from her hand, they both jumped back and the lady exclaimed that she had just had an electric shock, I said the fish had as well.


Her husband insisted there was nothing wrong with the pool equipment saying it had all just been rewired and promptly put his hand in the water to show us that everything was okay, I really would not have surprised me if he had been electrocuted, it was one of those moments where you can see what’s about to happen as he leant forward but you’re powerless to stop him risking his own life due to his own stupidity.


I measured the voltage of the water at around 90 volts from the neutral tail in the house with a probe dangling in the water. When removed the pump failed an insulation test and was replaced, I also reinstalled an earth rod and did away with the DIY TNCS earthing arrangement.


So, yes I know you can get an electric shock off water enclosed in a plastic pond liner or container, going back to an earlier comment  does that actually make the water an exposed conductive part? 


Also commented on before, some years ago I had a conversation on the phone with someone who I understand is one of the countries leading experts on bore hole water pumps, he told me that many year ago people did not bother to earth bore hole water pumps because they considered it pointless as being suspended in water down the bore hole within the general mass of earth they could not be better earthed, but now they always are, because obviously a four foot rod is a better earth than the pump in the bore hole is itself.


Which sort of leads me in a rambling manner to just how effective is a plastic insert in a metal water pipe?


We had a discussion some time ago and someone posted an explanation about cows dying in fields and diverted neutral currents, I not sure how to search for that, the search on this forum doesn’t do much, I usually go out to Google in the browser and come back in again.

I know I have told the story several times before on this forum.


Around fifteen years ago I was fitting a kitchen and doing the electrical work at a house with an overhead two cable supply and a DIY TNCS earth connection, a big choc-block terminal in the neutral tail after the meter, don’t you just love people who do things like that ?


In the garden there was a big Koi pond with a brick wall around it bringing the pool up around 18” above ground level, the pool being a lot deeper with a plastic liner along with all the kit and caboodle.


The lady of the house was sat on the wall feeding the fish and one come up to take some food from her hand, they both jumped back and the lady exclaimed that she had just had an electric shock, I said the fish had as well.


Her husband insisted there was nothing wrong with the pool equipment saying it had all just been rewired and promptly put his hand in the water to show us that everything was okay, I really would not have surprised me if he had been electrocuted, it was one of those moments where you can see what’s about to happen as he leant forward but you’re powerless to stop him risking his own life due to his own stupidity.


I measured the voltage of the water at around 90 volts from the neutral tail in the house with a probe dangling in the water. When removed the pump failed an insulation test and was replaced, I also reinstalled an earth rod and did away with the DIY TNCS earthing arrangement.


So, yes I know you can get an electric shock off water enclosed in a plastic pond liner or container, going back to an earlier comment  does that actually make the water an exposed conductive part? 


Also commented on before, some years ago I had a conversation on the phone with someone who I understand is one of the countries leading experts on bore hole water pumps, he told me that many year ago people did not bother to earth bore hole water pumps because they considered it pointless as being suspended in water down the bore hole within the general mass of earth they could not be better earthed, but now they always are, because obviously a four foot rod is a better earth than the pump in the bore hole is itself.


Which sort of leads me in a rambling manner to just how effective is a plastic insert in a metal water pipe?


We had a discussion some time ago and someone posted an explanation about cows dying in fields and diverted neutral currents, I not sure how to search for that, the search on this forum doesn’t do much, I usually go out to Google in the browser and come back in again.