Tonight I moved the current sensor from my test load (150W light bulb) to a real circuit in my main distribution box. That circuit is currently pulling nearly 500W at 121Vrms. It is logging data to a CSV file. It will be interesting to see what the plot looks like in the morning. It is not connected to Pachube.com right now. Perhaps by the end of the weekend. But with my taxes still to do, not sure how much time I will get.