This leaflet is designed to give you a brief overview of the electrical system in your home,
tell you about some of its safety features and give you a few tips on dealing with some of
the more common problems.
U ND ER STAN DING YO UR ELE CT RICAL SYST E M
Sometimes the RCD/RCBO will ‘trip out’ when the light bulb ‘blows’. This is caused by a surge of current as the
bulb blows and it is nothing to worry about. Simply replace the light bulb and reset the RCD/RCBO. Low bulb
life cannot be caused by faulty wiring and we recommend that you only purchase good quality bulbs from a
known manufacturer.
L I G H T BUL B S
You may have noticed that some green and yellow wires connected to your gas and water mains. This is
known as bonding. These connections are there for your safety and should not be tampered with or removed.
E A RTH BON DING
To comply with current building regulations, we have fitted mains operated smoke alarms & heat detectors.
Usually fitted to the hallways, landings, kitchens, if these detect smoke, they will both emit a high-pitched
beeping. If this turns out to be a false alarm, pressing and holding the hush button will silence them.
2
S M OK E ALAR MS
The heart of the electrical system is the consumer unit or fuse board as it’s commonly known. It’s usually in the
hallway or under stairs cupboard.
The consumer unit is connected to the electricity meter by the meter tails and all the wiring in your home starts
at this point. You will see that the sockets, cooker, lights etc are all on different circuits. This is so each circuit can
be wired in the appropriate size cable, larger cable for the cooker, smaller cable for the lights, and protected by
the appropriate size circuit breaker.
C O NSU M ER UNIT
The Residual Current Device (RCD/RCBO) for which you have covering different circuits within your property,
ensures you are always safe from any potential hazards. The RCD/RCBO is the only device that is designed to
prevent loss of life.
RCD’s and RCBO’s need to be sensitive to offer the correct level of protection, which sometimes lead to
‘nuisance tripping’, where the RCD trips out for no apparent reason. If there is no obvious problem, you can
simply reset the RCD by switching it back on. If it won’t stay in the ‘on’ position, with a socket outlet circuit you
need to unplug all the appliances on that circuit. If the RCD will now reset, try plugging the appliances back
in one by one until you find the appliance which is faulty and causing the tripping. We suggest you get the
appliance checked for safety. In our experience steam irons, cookers, kettles and washing machines are the
most likely culprits.
FAU LT F INDING
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