Is necessary Protection CT, CLASS - 5P10 fitted at Incomer side of main Breaker

Is necessary Protection CT, CLASS - 5P10 fitted at Incomer side of main Breaker ? Why ?

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Is necessary Protection CT, CLASS - 5P10 fitted at Incomer side of main Breaker ? Why ?..

Answer / sakeeb

5P10 CT used for Over current/earth fault protection.

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