A huge amount of homes in the United Kingdom still have old electrical wiring. This is unsafe and in effect a fire hazard but old wiring is not a good conductor and will cost you more on your electricity bills in comparison to modern systems. This meaning it will most likely effect the value of a home/building when it comes to selling it and will be shown as a problem when it comes to having a survey.

How to check if you may need a re-wire
The main thing you should check is the colour of the electrical cables, If you find a black coloured cable entering your consumer unit (also known as fuse box/fuse board/distribution unit) This is a sign that the wiring needs to be checked. Up to date electrical cables are either grey or white and have PVC insulation. The old black cables are insulated with rubber, which over time will decay.

Black rubber wires can be very old. In fact up to 40 years old and over time the conductors in the cables can meet. This will make your fuses blow and if you replace them they will just blow again and again. The only way to solve this problem is to have the cable replaced with the modern more safe PVC.


1. Does you consumer unit have replaceable fuse wires?
2. Does any of your sockets or plugs heat up fast or have burn marks?
3. Do your fuses trip regularly?
4. Do you need to use plug adapters or extensions?
5. Do your lights use old, twisted flex?
6. Is your flexing rubber coated?
7. Are you plugs and sockets rounded?
8. Do you have earth cables in your lighting and are they connected?
9. Over the last 10 years, have you had your wiring checked?
10. Do you have an earth cable on your gas meter and water stop tap
(if so is it 10mm sq).

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