Earth leakage circuit breaker diagram

Here is a typical diagram for an Earth Leakage Circuit Breaker (ELCB):

          +---------------+
          |  Live Wire  |
          +---------------+
                  |
                  |
                  v
+---------------+       +---------------+
|  Earth Wire  |       |  Neutral Wire  |
+---------------+       +---------------+
                  |
                  |
                  v
+---------------+       +---------------+
|  ELCB (Earth  |       |  MCB (Main     |
|  Leakage Circuit|       |  Circuit Breaker)|
+---------------+       +---------------+
                  |
                  |
                  v
+---------------+       +---------------+
|  Load (e.g.   |       |  Load (e.g.   |
|  Lighting,    |       |  Appliance,   |
|  Appliance)  |       |  etc.)        |
+---------------+       +---------------+

Here's a brief explanation of each component:

• Live Wire: The hot wire that carries the alternating current (AC) from the power source to the load.
• Earth Wire: The wire that connects the electrical system to the earth, providing a path for fault currents to flow to ground.
• Neutral Wire: The wire that carries the return current from the load back to the power source.
• ELCB (Earth Leakage Circuit Breaker): A device that detects and interrupts the earth leakage current, which is the current that flows to ground due to a fault in the electrical system.
• MCB (Main Circuit Breaker): A device that interrupts the main power supply to the load in case of a fault or overload.
• Load: The device or equipment that is connected to the electrical system and uses the power supplied by the ELCB and MCB.

The ELCB works by monitoring the current flowing to ground through the earth wire. If the current exceeds a certain threshold (typically set at 30mA), the ELCB trips and interrupts the power supply to the load. This prevents electrical shock or electrocution in case of a fault.

Note that the ELCB is typically installed in parallel with the MCB, and both devices work together to provide a safe and reliable electrical supply.