Switched neutral

Thanks Graham.

I think it is also worth bearing in mind that one of the fatalities during the construction of the Channel Tunnel was due to a control cable being crushed and shorting to earth. Because it was part of an arrangement like this, the solenoid, operating a hydraulic ram closed crushing the worker and even the emergency stop button wouldn't stop it.

The equipment was not allowed to be restarted until the entire panel (not made in the UK) had been rewired to put all the switching on the live side of relays and solenoids.

Now I accept that a lighting circuit switching on in the event of an earth fault is not likely to be life threatening but I really don't think that control by switching the neutral should be encouraged.

Thanks Graham.

I think it is also worth bearing in mind that one of the fatalities during the construction of the Channel Tunnel was due to a control cable being crushed and shorting to earth. Because it was part of an arrangement like this, the solenoid, operating a hydraulic ram closed crushing the worker and even the emergency stop button wouldn't stop it.

The equipment was not allowed to be restarted until the entire panel (not made in the UK) had been rewired to put all the switching on the live side of relays and solenoids.

Now I accept that a lighting circuit switching on in the event of an earth fault is not likely to be life threatening but I really don't think that control by switching the neutral should be encouraged.