A sediment control roll includes a threshold member having large apertures therethrough, a hollow sediment collection chamber, and an outflow filter having small apertures therethrough. The complex viscosity thereof at a frequency of 10 Hz is 80 to 1000 Pa\xb7s and the tan \u03b4 thereof at a frequency of 10 Hz is 0. In manual mode, the user turns off individual circuit breakers in an ordered sequence, and the load estimation algorithm calculates the difference in the power consumption when all loads are connected versus when one load is disconnected to estimate the power consumption of the disconnected load. In an embodiment of the invention, the intermediate devices at each hop stamp the time.