John
I meant I could see more point in a low weight microwave than in a low power one, I did not mean to infer that there was a link between the two, although there could be as less power would enable lighter components.
re. your point about low power settings using short bursts of high power - you are absolutely right, I stand corrected.
However it is easy to turn off the other appliances to minimise risk of tripping while using the microwave.
We used to do our babies bottles with boiling water from the kettle.
Personally we are happy without taking one.