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RCD Protection.
 A residual current device (RCD) is a protective device designed to cut off the electrical supply to prevent someone from receiving an electric shock.  This type
of device detects a leakage of currect from the electrical system and once this reaches a predetermined level (typically 30mA), it trips cutting off the supply.
Under the current regulations, rcd protection is required for virtually all circuits.  When a property is rewired or a new consumer unit is fitted to existing wiring, 
the new consumer unit will usually have at least two separate rcd's protecting the whole installation.  A device called an RCBO may be used, which combines
the rcd with the circuit breaker, in this case each individual circuit will be protected by its own rcd - preventing a fault on one circuit haveing any effect on other 
circuits in the installation.
RCD's may be fitted inside the consumer unit or other enclosure alongside it, such as the Wylex one pictured below:
All socket outlets must be protected by an rcd.  There are one or two exceptions to this, but generally in a domestic situation any new socket needs this extra
protection.  If you have an older fuse box, without inbuilt rcd protection one way of achieving this may be to use a socket that includes an rcd, shown below:
An rcd will cut the supply instantly when a live cable is cut through - the importance of this can be seen when using a lawnmower or hedge trimmer for example.  Quite simply
they save lives - however they are intended to make a safe and correct electrical installation even safer and are not an excuse to cut corners on safety.
Kent Security and Electrical supply, install and test RCD-protected consumer units and fuseboxes in Strood, Rochester, Chatham, Gillingham, Rainham, Maidstone and throughout Kent.
Call us today on 01634 566 202 for more information or for a quote.