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Compliant?

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Is this arrangement compliant or not?


Consumer unit. R.C.D. protected shower circuit supplied by a B40 M.C.B. which runs to a cord ceiling switch  in the shower room in 6.0mm2 T&E. Old electric shower removed. New power shower installed with water supplied from tanks. 0.63 Amp transformer in loft to feed new integral shower pump motor. Loft transformer fed via 3 Amp fused switched fused connection unit on a 1.0mm2 T&E cable from old shower ceiling cord switch. 1.0 mm2 T&E run 2.5 metres.


P.S. The switched fused connection unit is at the end of the supply cables.


Confirmation or condemnation by regs. please.


Z.
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  • 0

    AJJewsbury:




    (ii) "Be installed in such a manner as to reduce the risk of fault to a minimum." The cable is inaccessible as it runs under a tank stand and out of reach or risk of being stood on or mechanically damaged. 


    (iii) Just what requirement is meant here? Run in metal containment perhaps?



    The clause was traditionally used for things like fusebox tails and tap-offs from bus-bars. So something along the lines of insulated & sheathed singles (so there's double/reinforced insulation between live and c.p.c. (or other earthed parts) as well as between live conductors) run in such a way where basic insulation is exposed it can't touch other conductors, located where mechanical damage is unlikely and on a non-flammable surface would be the sort of arrangement I would have thought would comply. Live wires covered with only basic insulation shoved together into a back box behind the FCU and the cable itself run in the vicinity of timber joists (never mind all the other flammable detritus usually found in lofts) I still think falls short.


      - Andy.

     




    Thanks Andy,

                          the 1.0mm2 T&E is running on glass fibre flameproof insulation in a very clean and tidy environment with no rubbish or detritus near it at all. It does not run over any timber joists. I can not see any way that it can be damaged as it is under a tank stand and in an inaccessible area at the end of a loft. 


    Z.


     

Reply
  • 0

    AJJewsbury:




    (ii) "Be installed in such a manner as to reduce the risk of fault to a minimum." The cable is inaccessible as it runs under a tank stand and out of reach or risk of being stood on or mechanically damaged. 


    (iii) Just what requirement is meant here? Run in metal containment perhaps?



    The clause was traditionally used for things like fusebox tails and tap-offs from bus-bars. So something along the lines of insulated & sheathed singles (so there's double/reinforced insulation between live and c.p.c. (or other earthed parts) as well as between live conductors) run in such a way where basic insulation is exposed it can't touch other conductors, located where mechanical damage is unlikely and on a non-flammable surface would be the sort of arrangement I would have thought would comply. Live wires covered with only basic insulation shoved together into a back box behind the FCU and the cable itself run in the vicinity of timber joists (never mind all the other flammable detritus usually found in lofts) I still think falls short.


      - Andy.

     




    Thanks Andy,

                          the 1.0mm2 T&E is running on glass fibre flameproof insulation in a very clean and tidy environment with no rubbish or detritus near it at all. It does not run over any timber joists. I can not see any way that it can be damaged as it is under a tank stand and in an inaccessible area at the end of a loft. 


    Z.


     

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