1. Field of the Invention
At least one example in accordance with the present invention relates generally to systems and methods for monitoring a load center for current and power usage.
2. Discussion of Related Art
A load center or panelboard is a component of an electrical supply system which divides an electrical power feed from a power line into different subsidiary circuit branches. Each subsidiary circuit branch may be connected to a different load. Thus, by dividing the electrical power feed into subsidiary circuit branches, the load center may allow a user to individually control and monitor the current and power usage of each load.
Current Transformers (CT) are commonly used to monitor current in a subsidiary or main branch of a load center. A CT may be used to measure current in a branch by producing a reduced current signal, proportionate to the current in the branch, which may be further manipulated and measured. For example, a CT coupled to a branch of a load center may produce a reduced current AC signal, proportionate to the magnitude of AC current in the branch. The reduced current AC signal may then either be measured directly by measurement instrument or converted to a DC signal and passed to a measurement instrument. Based on the signal received, the measurement instrument may determine the level of current in the subsidiary branch and may assist in providing efficient energy management.