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Originally posted by: lsuk
I dont understand how the MCB's work, if you've got a fault live to earth somewhere down the line on a circuit, why does it trip off? how does it detect the fault via the MCB and trip?
I came across this posting on the IET wesite
Do any colleges teach people anything now a days.
Depending upon type of MCB then if earth fault current flowing through he MCB is greater then max permitted then MCB Trips.
I dont understand how the MCB's work, if you've got a fault live to earth somewhere down the line on a circuit, why does it trip off? how does it detect the fault via the MCB and trip?I came across this posting on the IET wesite
Do any colleges teach people anything now a days.
Depending upon type of MCB then if earth fault current flowing through he MCB is greater then max permitted then MCB Trips.
