These 200A CT sensors are probably the best on the market today. Accuracy is +/- 0.5%. At 220V it can measure up to 44,000 Watt. Great to measure very large main circuit(s) PLN connection. The 200A sensor will also be sufficiently large enough for most large distribution circuits. Please measure the width of the cable. The 200A sensor will fit cables with maximum width of 24mm.
There are CT Sensors with larger openings. Please contact us with your size request and we will find a CT sensor that will be compatible with eMon Energy Monitor.