A method, apparatus, and system are provided for testing multi-core processors. In stowed positions, the long legs of the wrenches lie against one side of the body in a nested configuration, the uppermost wrench being engageable with a retaining tab on the body to prevent movement of the wrenches axially of the sockets. This invention provides an intelligent, self-aware powerline conditioning and communication node that allows for, or even improves, data communication on the network, and still provides for noise reduction, line filtering, and surge protection for downstream electrical appliances. The method also includes configuring the processing device to determine which of the plurality of power lines is active based at least partially on the current signal and generate a motor speed control signal that directs the motor to operate at the motor speed that corresponds to the active power line.