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Reg. 559.5.1.206 E.S. Lampholders.

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Why does the above regulation exempt E.S. lampholders if they comply with  BS EN 60238 from being connected in a specific way, i.e. with the outer connection being connected to the neutral of the supply please? Are they inherently safe?


Thanks in advance.


Z.


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    Chris Pearson:

    Assuming that N is at or close to earth potential, if you poke a finger in, the first bit that you will touch will not give you a shock and with further insertion, only your finger tip gets zapped.


    However, if the outer part were live, there would be a risk of hand to foot shock.




    Yes Chris I have always connected Live (phase) to the centre contact and Neutral to the outer terminal of E.S. lampholders in the past. But recently a customer asked me to install some new ceiling lights which had E14 E.S. insulated lampholders. The internal flex at the ceiling plate was just clear with no brown or blue indentification. That is why I am researching this matter. The above regulation seems to allow any combination of connection if the B.S. applies.


    Z.

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  • 0

    Chris Pearson:

    Assuming that N is at or close to earth potential, if you poke a finger in, the first bit that you will touch will not give you a shock and with further insertion, only your finger tip gets zapped.


    However, if the outer part were live, there would be a risk of hand to foot shock.




    Yes Chris I have always connected Live (phase) to the centre contact and Neutral to the outer terminal of E.S. lampholders in the past. But recently a customer asked me to install some new ceiling lights which had E14 E.S. insulated lampholders. The internal flex at the ceiling plate was just clear with no brown or blue indentification. That is why I am researching this matter. The above regulation seems to allow any combination of connection if the B.S. applies.


    Z.

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