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Sunday, August 4, 2019

MCCB Circuit Breaker

As you know every house or commercial building has a distribution box which is where the Main Switch is located. It’s the first electrical part receiving the electricity from the electric meter inside your house. Therefore the Main Switch is the responsible part to take down the electricity throughout the house as required.

Often useful while upgrading house wiring and when thundering & lightning to disconnect the supply.

There are 2 wires inside the cable coming from the electric meter namely Live Wire and Neutral Wire. These 2 wires are then connected to the Main Switch. While the main switch is OFF the electric supply is stopped by disconnecting the two wires.

Yes, you read it right.
Remember, current flows only when the circuit is closed, hence the current flows specifically when the Main Switch is ON. That’s why you need to OFF the Main Switch to disconnect the power. Quite the other way around than the usual “switch on”. Right?

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