Abstract: A system for testing power line carrier signal integrity or strength in a building electrical system includes a transmitter module electrically coupled to a first electrical outlet and configured to transmit a power line carrier signal over the building electrical system. The system also includes a receiver module electrically coupled to a second electrical outlet and configured to receive the power line carrier signal from the transmitter module. The receiver module includes circuitry configured to determine whether at least one of the integrity and strength of the power line carrier signal is sufficient for a load control system installed in the building electrical system to communicate with relay modules installed in the building electrical system using power line carrier signals. The receiver module includes a user interface configured to provide an indication of at least one of the integrity and strength of the power line carrier signal.

Abstract: A control system for a home electrical system includes a first switch installed at a meter socket of a utility module for controlling flow of electricity from a utility source to an electrical load, a second switch installed in a home generator for controlling flow of electricity from the generator to the electrical load, and circuitry configured to actuate the first and second switches. The circuitry includes at least one interlock to provide power to the electrical load from only one of the utility source and the generator at any given time.

Abstract: A system for testing power line carrier signal integrity or strength in a building electrical system includes a transmitter module electrically coupled to a first electrical outlet and configured to transmit a power line carrier signal over the building electrical system. The system also includes a receiver module electrically coupled to a second electrical outlet and configured to receive the power line carrier signal from the transmitter module. The receiver module includes circuitry configured to determine whether at least one of the integrity and strength of the power line carrier signal is sufficient for a load control system installed in the building electrical system to communicate with relay modules installed in the building electrical system using power line carrier signals. The receiver module includes a user interface configured to provide an indication of at least one of the integrity and strength of the power line carrier signal.

Abstract: A control system for a home generator includes circuitry configured to determine a first cost of electricity provided by an off-site provider, determine a second cost of electricity produced by the home generator, compare the first cost with the second cost, and provide the result of the comparison as an output.