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How it Works - an Overview
There are 3 main components
The Current Cost ENVI is a real time display that shows you how much electricity you consume and how much it costs you, as you use it. There are 3 simple components which work together to feed your real-time electricity use information into your home: an ENVI display; transmitter; CT clamp.
Place it in your home
The ENVI display is situated inside your home, perhaps in your kitchen or living room. It plugs into your wall socket so there is no need for wasteful batteries. The display shows changing electricity use, cost and room temperature.
Receives signals from up to 10 difference sources
The ENVI receives information from up to 10 different transmitters. The main transmitter is situated in your meter box and sends information about the overall electricity use of your home. Additional transmitters can be used to monitor individual circuits or inputs from a solar panel or a wind turbine.
The IAMs (Individual Appliance Monitors)
Additionally, the ENVI can also receive information from IAMs (Individual Appliance Monitors) which send information about the power consumption of individual appliances. (IAMs due to be available later this year)
The Science behind the Solution
The transmitter is connected to CT clamps (1 or 3 depending on whether single phase or 3-phase power is being monitored) which are fitted around the positive wire. The CT clamp operates as an electromagnetic induction loop. When a current passes through the circuit that is being monitored, in accordance with Faraday’s Law, a proportional voltage is induced in the metal loop within the CT Clamp. This voltage is then measured and used to determine the power being drawn through the circuit, and this information is transmitted to the ENVI display.
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