Electric Mechanic Interview Question:

Explain me what is the difference between isolators and electrical circuit breakers? What is bus-bar?

Submitted by: Muhammad

Isolators are mainly for switching purpose under normal conditions but they cannot operate in fault conditions .Actually they used for isolating the CBs for maintenance. Whereas CB gets activated under fault conditions according to the fault detected.Bus bar is nothing but a junction where the power is getting distributed for independent loads.
Submitted by: Muhammad