Can three single phase circuit breakers[one on each phase of course]be used rather than a three phase breaker?
Three Phase Circuit Breakers
- Thread starter stephenf8542
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Yes, of course you can. It's specifically allowed by BS7671, 431.1.1
If the circuit feeds a motor, operation of a single MCB would result in single phasing. This could lead to thermal overload and the failure of the motor.
Single phasing should not happen because all three phase motors should have single phasing protection.
If the circuit feeds a motor, operation of a single MCB would result in single phasing. This could lead to thermal overload and the failure of the motor.
Single phasing should not happen because all three phase motors should have single phasing protection.
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