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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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    This makes sense except that the electronics still sees the 230V when the device is switched off.

    Also anyone who uses the light switch as a means of isolation before working on the contactor will find out the hard way why it is a bad idea. I would have thought that the regs should mandate a warning notice whenever this is the design.
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    This makes sense except that the electronics still sees the 230V when the device is switched off.

    Also anyone who uses the light switch as a means of isolation before working on the contactor will find out the hard way why it is a bad idea. I would have thought that the regs should mandate a warning notice whenever this is the design.
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