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Plug & Play Hot Tubs.

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.

 

 

 

Parents
  • The N.I.C.E.I.C's view point.

    “Hot Tubs and TN-C-S Supplies The NICEIC Technical Helpline is often asked whether a hot tub installed outdoors may be supplied from a circuit taken from an installation forming part of a TN-C-S system, often referred to as a PME Supply. Neither the Electricity Safety, Quality and Continuity Regulations nor the guidance given in Engineering Recommendation G12/4 – Requirements for the Application of Protective Multiple Earthing to Low Voltage Networks published by the Energy Networks Association places any restrictions in respect of the connection of a hot tub to a PME supply. G12/4 does offer several alternatives in respect of the connection of a swimming pool to a PME supply and it is sometimes suggested, erroneously, that hot tubs should be treated in the same manner as a swimming pool. However, it is clear that hot tubs fall outside of the scope of Section 702 of BS 7671 (see Regulation 702.11). So, unless, as stated previously in this article, a hot tub outdoors is installed within the zones of a swimming pool, only the general rules of that standard are applicable.”

     

    Z.

Reply
  • The N.I.C.E.I.C's view point.

    “Hot Tubs and TN-C-S Supplies The NICEIC Technical Helpline is often asked whether a hot tub installed outdoors may be supplied from a circuit taken from an installation forming part of a TN-C-S system, often referred to as a PME Supply. Neither the Electricity Safety, Quality and Continuity Regulations nor the guidance given in Engineering Recommendation G12/4 – Requirements for the Application of Protective Multiple Earthing to Low Voltage Networks published by the Energy Networks Association places any restrictions in respect of the connection of a hot tub to a PME supply. G12/4 does offer several alternatives in respect of the connection of a swimming pool to a PME supply and it is sometimes suggested, erroneously, that hot tubs should be treated in the same manner as a swimming pool. However, it is clear that hot tubs fall outside of the scope of Section 702 of BS 7671 (see Regulation 702.11). So, unless, as stated previously in this article, a hot tub outdoors is installed within the zones of a swimming pool, only the general rules of that standard are applicable.”

     

    Z.

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