Tag Archives: Circuit Breaker

Frequency characteristics and switching, operating characteristics of Circuit breaker.

Rated frequency of circuit breaker: Two frequencies are currently used throughout the world: 50 Hz in Europe and 60 Hz in America, a few countries use both frequencies. The rated frequency is either 50 Hz or 60 Hz. The performance of a circuit breaker is same for both the frequencies 50HZ and 60HZ ac network. … Continue reading Frequency characteristics and switching, operating characteristics of Circuit breaker. read more

Earthing cable requirements as per BNBC standard.

[ada]Earthing cable sizes should be adequate with respect to the phase.This post covers the BNBC -Bangladesh National Building Code. Phase cable size Earthing cable size Below 4 rm Earthing not less than 3.243 mm2 or 14 SWG. But for the unavailability of this size it can be considered as 4 rm. So it should not … Continue reading Earthing cable requirements as per BNBC standard. read more