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Fixed minor grammer issue in electricity-grid.markdown (#18956)

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Christopher Nethercott 2021-08-16 18:43:07 +01:00 committed by GitHub
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@ -25,7 +25,7 @@ CT clamp sensors measure the instantaneous current passing through an electrical
In Home Assistant we have support for off-the-shelf CT clamp sensors and you can build your own with ESPHome's [CT Clamp Current sensor](https://esphome.io/components/sensor/ct_clamp.html). You can also use a dedicated energy meter sensor in ESPHome, which outputs more detailed data, like the [ATM90E32](https://esphome.io/components/sensor/atm90e32.html).
The off-the-shelf solution that we advice is the [Shelly EM](https://shop.shelly.cloud/shelly-em-2-x-120a-clamp-wifi-smart-home-automation?tracking=A7FsiPIfUWsFpnfKHa8SRyUYLXjr2hPq). The device has a local API, updates are pushed to Home Assistant and it has a high quality integration.
The off-the-shelf solution that we advise is the [Shelly EM](https://shop.shelly.cloud/shelly-em-2-x-120a-clamp-wifi-smart-home-automation?tracking=A7FsiPIfUWsFpnfKHa8SRyUYLXjr2hPq). The device has a local API, updates are pushed to Home Assistant and it has a high quality integration.
In case of three-phase electrical systems, attention should be drawn to the fact that the current measurement of a given phase is matched to the voltage of the same phase, otherwise the power measurements will be incorrect.