A system (100) for dynamically measuring at least one power metric in a local power circuit and providing the measured power metric to a personal controller (10). The system includes a primary shadow meter (300) with a power measurement module configured to measure a local power circuit and a plurality of ancillary shadow meters (500a, 500b, 500c) that each have a power measurement module configured to measure a single power circuit. The primary shadow meter and ancillary shadow meters may be connected over a wired network and/or wireless network.

A method for operating an energy consumption metering system is provided. The method includes determining a first value of energy consumption at a central supply point by a first energy consumption metering device, and determining a second value of energy consumption of a sub-location of the central supply point by a second energy consumption metering device. A deviation of the first value and the second value is determined and based on the determined deviation, calibration data for calibrating at least one of the first and the second energy consumption metering device is determined.

A method for operating an energy consumption metering system is provided. The method includes determining a first value of energy consumption at a central supply point by a first energy consumption metering device, and determining a second value of energy consumption of a sub-location of the central supply point by a second energy consumption metering device. A deviation of the first value and the second value is determined and based on the determined deviation, calibration data for calibrating at least one of the first and the second energy consumption metering device is determined.

Power consumed by a digital circuit that contains multiple sub-circuits may be computed. Each sub-circuit may include more than one transistor and have at least one input. A signal transition sensor may be connected to an input to each sub-circuit and configured to count the number of signal transitions at the input or to time the duration of a signal transition at the input. Weight information may be stored that is indicative of an amount of power that is being consumed by each sub-circuit based on a count that is counted by or a time duration that is timed by each signal transition sensor that is connected to an input of that sub-circuit. The amount of power being consumed by the digital circuit may be computed based on a count that is counted by or a time duration that is timed by each signal transition sensor and the weight information.

Power consumed by a digital circuit that contains multiple sub-circuits may be computed. Each sub-circuit may include more than one transistor and have at least one input. A signal transition sensor may be connected to an input to each sub-circuit and configured to count the number of signal transitions at the input or to time the duration of a signal transition at the input. Weight information may be stored that is indicative of an amount of power that is being consumed by each sub-circuit based on a count that is counted by or a time duration that is timed by each signal transition sensor that is connected to an input of that sub-circuit. The amount of power being consumed by the digital circuit may be computed based on a count that is counted by or a time duration that is timed by each signal transition sensor and the weight information.

An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.

An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.

An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.

An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.

An electric meter contact arc detector is mountable to an electric meter base and may comprise: a de-tuned resonant tank circuit configured to receive a magnetic field and/or an electric field from an electrical arc at a stab contact; an electrical detector detecting signals generated in the de-tuned resonant tank circuit responsive to the electrical arc at the stab contact; and an output device indicating detection of an electrical arc. A disconnect device responsive to the electrical detector and configured to interrupt an electrical connection to the stab contact, may be provided. An electrical arc at the stab contact may thus be detected and may cause an electrical connection to the stab contact to be interrupted.