Quote Originally Posted by Saracen View Post
I understand you can't daisy chain RCDs, so I can't fit a local one to limit the blackout.

Adrian.
RCD is an earth leakage protector and you can put one local unit, but you must make sure it is tripping faster (= specified for less leakage current) than the main one. There are even sockets which protect just one socket, so of course there is local protection possibility, but regardless how you do you should (or at least I would) find out why it is tripper, not just accept the fact that it trips now and then. There must be something wrong somewhere in your electrical installation, or some wires or switches get wet during use, or something similar. Perhaps the motor, perhaps something else, but definitely something is wrong if it trips.