Thread: Switch the Load or the Neutral

Originally Posted by More Volts Igor

It is possible that the OP's friend is referring to the standard UK light wiring technique of running L & N to the ceiling rose and running a dropper down to the switch, rather than supplying power to the switch and having an 'upper' to the rose (as seems to be the Thai way).

I don't understand how that makes any difference.
Is the dropper on the live side or the neutral side ?

Originally Posted by Thetyim

Originally Posted by More Volts Igor

It is possible that the OP's friend is referring to the standard UK light wiring technique of running L & N to the ceiling rose and running a dropper down to the switch, rather than supplying power to the switch and having an 'upper' to the rose (as seems to be the Thai way).

I don't understand how that makes any difference.
Is the dropper on the live side or the neutral side ?

The dropper is always on the live side.

To be honest, it was a thought, maybe not a good thought. I don't have a copy of IEE 17th Edition, but I'm not aware of any changes permitting neutral switching so there has to be confusion somewhere in the mind of the OP (friend).

If anyone can come up with a sitation where switched neutral would be advantageous / safer, I'm all ears

Thanks for your input and I have not had any good opportunity to re-visit the question with my Brit friend

The Dude and driving force have it correct.
I am a pro..20 years liscensed electrician in usa and have done many projects in LOS, Viet, and Costa Rica.
It's very dangerous and life threatening situation. Don't trust Thai electricians.most know nothing about this..as for internet expat experts.....??














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