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Switched neutral

Harry Macdonald
Looking at the BS7671 AMD2 out for consultation, I noticed clause 463.1.2. This shows an arrangement whereby the control device for a lighting circuit is switched by a switch on the neutral side of the device.

Clearly this works but why would anyone want to do this?
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    So the only the contactor and the lamp need a live supply. It is also how a lot of E7 meter switching is organised.

    And we do it for electronic switches so that the driver electronics can be at or within  half a dozen volts of neutral potential, rather than always live. Better for things like photocells outdoors.
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    So the only the contactor and the lamp need a live supply. It is also how a lot of E7 meter switching is organised.

    And we do it for electronic switches so that the driver electronics can be at or within  half a dozen volts of neutral potential, rather than always live. Better for things like photocells outdoors.
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