Can anybody point me towards a circuit diagram/plan.
I am looking for a design where I can operate a relay by sensing mains (240v ac) power being switched on in a cable. No metalic contact is to be made with the mains cable (ie cut into it). I can wrap a wire round or along it.
Thanks
Try googling for "current transformer" or "hall effect device".
Good Luck! Rich
Hack a cheap voltage sensor to operate a relay:
Or did you want to learn how it's done?
Ed
"Rich Grise"
** Ignore this utter fool........ Phil
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