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Plug & Play Hot Tubs.

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Sparkiemike recently mentioned plug and play hot tubs that are popular these days.

I came across one recently at a holiday cottage. It was just plugged into an outdoor weatherproof socket. The hot tub was quite small as hot tubs go. It sat on flagstones on soil in the garden. It was possible to have one foot in the water and the other on a flagstone.

The earthing arrangement was P.M.E.

I was not happy with that so I TT'd the socket, and converted it to an R.C.D. type socket. The circuit is R.C.B.O. proteced at the consumer unit, but I do like belt and braces R.C.D. protection is critical situations like this.

How many D.I.Yers will install these plug and play hot tubs in the garden without considering the electrical safety aspects?

Z.

 

 

 

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    AJJewsbury: 
     

    If the manufacturers (the ones who will likely get the blame / bad-publicity if people start getting tingles or shocks from a hot tub) are happy for it to be connected to a PME system by end-users, might we suspect that either there aren't any exposed-conductive-parts or they're so far behind plastic pipework that even given the resistance of the water the chances of a noticable shock must be minimal. 

       - Andy.

    The polluted water with many additions may be quite conductive. It will no doubt run past earthed metal sheathed water heating elements(s) where it could become live. The water will be electrically connected to the P.M.E. earth system in a T.N.C.S./P.M.E. supplied circuit. Certainly a risk outdoors.

    I suggest a greater potential shock risk than P.M.E. supplied caravans, boats or catering units.

    Z.

     

     

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  • 0

    AJJewsbury: 
     

    If the manufacturers (the ones who will likely get the blame / bad-publicity if people start getting tingles or shocks from a hot tub) are happy for it to be connected to a PME system by end-users, might we suspect that either there aren't any exposed-conductive-parts or they're so far behind plastic pipework that even given the resistance of the water the chances of a noticable shock must be minimal. 

       - Andy.

    The polluted water with many additions may be quite conductive. It will no doubt run past earthed metal sheathed water heating elements(s) where it could become live. The water will be electrically connected to the P.M.E. earth system in a T.N.C.S./P.M.E. supplied circuit. Certainly a risk outdoors.

    I suggest a greater potential shock risk than P.M.E. supplied caravans, boats or catering units.

    Z.

     

     

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