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    Motor MCCB

    What is the regulation in BS 7671 to size the MCCB for a motor? Is it 1.5 times the motor full load amperes?
  2. L

    Earth Fault Impedence

    Can anyone please explain what is the maximum earth fault loop impedance permitted for moulded case circuit breaker (MCCB)? Also, BS 7671 says a disconnection time of 5 sec is allowed for breakers in distribution circuits. What is the difference between a distribution circuit and final circuit?
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