The Efergy Additional Sensor is used in conjunction with the Elite or E2 Energy monitors if you have a three phase supply.

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The Efergy Elite and E2 are supplied with one sensor, which will work with most standard domestic supplies. If you are going to use your Efergy to monitor a three phase (industrial) supply, you will need two additional sensors.

How it works
The sensor is attached around the live cable that comes from your electricity meter, this will usually be in the meter cupboard.

Key Features
Allows you to monitor three phase power.

Technical Stuff
For 14mm cables
90A rating