Thanks Gemma, I hadn't considered 'phases' - I'll try a few other (or even the same) socket.
Thanks Beagle- I can't remember if there's a wireless switch and thanks for the steer. I've actually got a Netgear Trek device I use in the UK as an additional router which looks similar to the device you mention- I'll take it with me next time I go at the end of Aug
Thanks again