emonPi with Rogowski Coil

[Robert.Wall]

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US 200 Amp Service explained or Do I need a 200 Amp CT?

A common question is “I have 200 Amp service, do I need a 200 Amp CT?” The answer is most likely no. Unless you have a very large house, a 100 Amp CT would be a better choice. (Large houses, typically have 320 or 400 Amp service and may actually need a 200 Amp CT, but this article addresses 200 Amp service installations) So what does the term 200 Amp service refer to? Simply put, it means the weakest link in your Service Entrance Wire, Meter Base, Meter, Main Breaker, Load Center (circuit b…