Systems and Methods for Measuring Electrical Power Usage in a Structure and Systems and Methods of Calibrating the Same

A method of calibrating a magnetic field sensor device, the magnetic field sensor device coupled to a first surface of a circuit breaker box, the circuit breaker box overlying an electrical power infrastructure of a building, the electrical power infrastructure having a first phase branch and a second phase branch, the magnetic field sensor device comprising two or more magnetic field sensors, the method comprising:

• determining a first amplitude and a first phase angle of a first magnetic field in the two or more magnetic field sensors of the magnetic field sensor device;
• receiving communications that a first load is coupled to the first phase branch of the electrical power infrastructure;
• while the first load is coupled to the first phase branch, determining a second amplitude and a second phase angle of a second magnetic field in the two or more magnetic field sensors of the magnetic field sensor device;
• receiving communications that a second load is coupled to the second phase branch of the electrical power infrastructure;
• while the second load is coupled to the second phase branch, determining a third amplitude and a third phase angle of a third magnetic field in the two or more magnetic field sensors of the magnetic field sensor device;
• and
• determining one or more calibration coefficients for the magnetic field sensor device at least in part using the first amplitude and the first phase angle of the first magnetic field in the two or more magnetic field sensors, the second amplitude and the second phase angle of the second magnetic field in the two or more magnetic field sensors, and the third amplitude and the third phase angle of the third magnetic field in the two or more magnetic field sensors.

A system for monitoring electrical power usage in an electrical power infrastructure of a building, the building comprising a circuit breaker box and electrical supply conductors of the electrical power infrastructure of the building, the system comprising:

• a power consumption measurement device configured to be coupled to a first surface of the circuit breaker box, the circuit breaker box overlying at least part of the electrical supply conductors for the electrical power infrastructure, the power consumption measurement device comprising one or more magnetic field sensors;
• a first calibration device configured to be electrically coupled to the electrical power infrastructure, the first calibration device comprising one or more first calibration loads;
• and
• a calibration module configured to run on a first processor and configured to at least partially calibrate the power consumption measurement device using data obtained from the one or more magnetic field sensors of the power consumption measurement device,
• wherein:
• the power consumption measurement device is configured to obtain at least part of the data while at least one of the one or more first calibration loads is electrically coupled to the electrical power infrastructure and while the power consumption measurement device is coupled to the first surface of the circuit breaker box.

A magnetic field sensing device comprising:

• at least two magnetic field sensors configured to detect a magnetic field in a current carrying conductor;
• a phase detector electrically coupled to outputs of the at least two magnetic field sensors;
• and
• a phase indicator electrically coupled to the phase detector,
• wherein:
• the phase indictor comprises a display that indicates when the at least two magnetic field sensors are in a position in relation to the current carrying conductor.