These 50A CT sensors are probably the best on the market today. Accuracy is +/- 0.5%. At 220V it can measure up to 11,000 Watt. Great to measure the main circuit(s) PLN connection. The 50A sensor will also be large enough for most distribution circuits. Please measure the width of the cable. The 50A sensor will fit cables with maximum width of 10mm. Most distribution cables will be less than 10mm.
The next size up CT Sensor we carry will be 100A with a 16mm opening.