electrical systems. It prevents electric shock and reduces the risks of electrical fires. This device is a highly sensitive component that monitors the flow of electrical current in a circuit and ...

The residual current device (RCD) is used to detect earth fault currents and to interrupt supply if an earth current flows. The main application is to prevent electrocution but RCDs can also be used ...

You can't overload this without tripping overcurrent devices unless you're really trying. See OP's picture. One RCD, and a bunch of normal breakers this one is protecting. Something's funky in the ...