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The install app converts your wire names to the correct connection point on the Nest. Can't answer if that specific wire is required . I did have a c wire
Sorry, there was a problem. Please try again later.No it does not require house current at the thermostat, power is supplied by a low voltage transformer either in the furnace or tapped into the wires going to the thermostat.
Sorry, there was a problem. Please try again later.In most cases, Google Nest thermostats can charge their built-in battery using your system’s heating and cooling wires. But in a small number of situations you may need to connect a common or C wire to deliver enough consistent power to your thermostat. You can learn more about this in the following article: https://support.google.com/googlenest/answer/9251212
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