Andy Burns wrote:
ant wrote:

I know the energy consumption monitor thing 'could' be a bit rubbish
but it does appear to be linear based on all the other things I've
tested...

Were all the other things you tested purely resistive loads (e.g.
kettle, incandescent lamps, heaters, oven etc)?

CFL lamps (and PCs, most phone chargers and wall warts) draw current in
a non-linear way, so are difficult to measure with the simple power meters.

s/simple/badly designed.