I've been doing some reading up and would like to build a project that non invasively measures the power of different devices (PC, fridge, TV etc)
I'm going to be using a arduino and a clamp on CT sensor. From **broken link removed** up about these sensors it looks like the clamp needs to put around the live or neutral wire only and not around the whole cable (live/neutral/earth) - that's not what I was expecting as its not quite invasive then?
Am i missing something? Do you get sensors that you can clip around the whole cable that will give you the current value?
I'm going to be using a arduino and a clamp on CT sensor. From **broken link removed** up about these sensors it looks like the clamp needs to put around the live or neutral wire only and not around the whole cable (live/neutral/earth) - that's not what I was expecting as its not quite invasive then?
Am i missing something? Do you get sensors that you can clip around the whole cable that will give you the current value?