The electric installations in our homes are split up into electrically separated segments known as circuits. Each circuit provides electricity to equipment in a very well defined and specific group. All the light fittings and light switches are normally found on one circuit known as the lighting circuit. Air-conditioners, heat and ventilation equipment are grouped on another signal known as the HVAC circuit. And finally, socket outlets are grouped on a signal known as the power circuit.
Each circuit comprises of cables, switches, connections and other electrical equipment built to carry only the maximum electrical current specified by the manufacturer. When exposed to current exceeding this maximum, the electrical component may break down, melt or catch on fire. Signal breakers were introduced to ensure this does not happen by disconnecting the electricity supply when the electrical current that moves exceeds the maximum capacity that the circuit rccb manufacturer components can handle.
Have a look around your home at all the socket outlets. The number of appliances are plugged into each socket wall plug? Chances are you have more than the circuit is designed for. Our increasing use of electrical and electronic devices puts more pressure on our electric installations every day – sometimes to the point where the amount of electricity we use surpasses the amount that the circuit can safely give us without overheating or getting damaged. When this occurs, the circuit breaker in your switchboard will disconnect the circuit from the electrical supply.
Nearly all properties which may have an electricity supply will be fitted with someone device to distribute electricity to the circuits. Among the key uses of a consumer unit is that it allows there to be different circuits to be used and individually protected by way of a signal breaker. For example there can be a separate supply of electricity for upstairs and downstairs or even outside too. The buyer unit is best described as the centre point for offering the wiring system for all those electrical sources positioned in your family such as plug sockets, lighting etc.
Originally consumer units housed fuses and were called fuse boards. Miniature circuit breakers have now replaced fuses. In the event of an excess a miniature circuit breaker can be reset by anyone, simply by moving the switch. A fuse would have to be taken out and rewired by a professional which could cost a lot in some cases. A circuit breaker also can be used to disconnect the electricity supply allowing to securely change a light light or replace a connect socket for example.
To make certain safe and more reliable circuit protection, a protection device enables you to disconnect the electricity when there is an discrepancy in the electrical current. The device is recognized as an RCD or residual current device. An RCD provides this extra amount of protection as it trips out much quicker than the standard circuit breaker. This device has the capacities of saving lives as it disconnects so quickly it helps prevent a human being from being electrically shocked. With the new enforcement of the 17th Edition Regulations there needs to be a residual current device installed within the consumer unit. Instead of utilising an RCD you can utilize an RCBO which is a combo of both RCD and a small circuit breaker.