Elcb

Review this:
Earth leakage circuit breaker - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Earth_leakage_circuit_breaker)

When a Induction Motor runs, the current increases when load on the motor increase, but voltage and frequency does not fall, what is the reason?
I understand, rotating magnetic flux produces current in the rotor windings which will again produce magnetic flux, this will cause torque due to slip. But when load on rotor increases, the rotor tend to reduce speed. What is that causing the voltage current in stator to increase. Please explain.
Thanks

What is the difrence between ELCB & RCCB.and how can work both.In RCCB we are not connect neutral so what will be happen,it will trip or not.