About RCBOs

by Editor on December 22, 2013

Have you ever had electrical work done in your home and wondered about the components being installed? This guest post by Meteor is a beginners’ guide to RCBOs.

RCBO Breaker from Meteor Electrical

Well, have you ever heard of an RCBO or what it does? Hopefully by the end of this article you be a bit clearer on what an RCBO is for.

An RCBO is known as a residual current breaker with over current. The main function of a RCBO is to protect an overload of a circuit and to protect the lives of your family. Your electrician will install an RCBO to stop overloading of circuits that and electric shocks that may be caused by earth faults.

An RCBO works like a MCB i.e. a mains circuit breaker; it stops an overload in a circuit and can detect the overload easily via the trip switch. It also works like an RCD i.e. a residual current device; this is a safety device that automatically switches off the electricity when it detects a fault. The RCBO figures out whether the current is equal and if it isn’t it could possibly mean that there is a leakage of current to earth, once this is detected the RCBO will trip cutting of the electricity and saving your life.

RCBO’s carry normal current along with a short current that they can interrupt safely. You may ask what is a short circuit? Well a short circuit is an abnormal connection when two nodes are supposed to be different voltages; the result of this is often over heating, fires, explosions and shocks. A common example is in your bathroom as you don’t have any socket plugs as you don’t want to have to touch the plug with a wet hand and get a shock, this is the main reason why you only use a pull cord for your light in the bathroom is to stop a conduction.

Hopefully this has helped with your understanding of RCBO and you will be able to tell what’s going on when you see an RCBO or if you ever have to have one installed.

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