Why is my owl so inaccurate?

devon_guy

So I have taken a meter reading exactly 7 days after the last one and I have used 22 units of electricity, yet my owl says in the last 7 days I've only used 12!! Why on earth would it be so far out?

tfspark

My best guess would be that you haven't programmed it properly?

devon_guy

How can you program it? All you do is put in how much the cost per kw is

penrhyn

You can also input the mains voltage.
Maybe the sampling rate causing errors, you have connected to the earthy side of the supply rather than the live, the current clamp is not seating properly.
More lightly if your quiescent power consumption is lower than around 400 watts they become very inaccurate.