In 2006, Amendment 2 of 17 th Edition BS7671 Wiring Regulations saw a change to “harmonise” the UK colours with the European cable colours for consistency and to avoid confusion. These harmonised colours have been in use since 31 March 2004 and became compulsory in all new installations from 31 March 2006. Cable is used for all fixed wiring - which is usually hidden behind walls, ceiling and floor. You'll need bigger cable for circuits with a higher current demand. The colours being: Buy 1.5 mm² 3-Core & Earth Cable at Screwfix.com. and, in 3-phase cable (brown, black & grey) which is L1, L2 & L3. Mark the amount of flex outer sheath you need to remove, then bend the flex double and make a shallow cut at the mark. Select Your Cookie Preferences. Twin (2-; and 3- or 4-) core and earth Flat cable, usually insulated by a polyvinyl chloride sheath, used for fixed wiring. Pitacs 3 Core & Earth Cable (6243Y) 1.0mm2 x 50m Drum is rated 4.9 out of 5 by 7. As normal cable sheathing isn't frost-resistant, you'll need to protect it if it runs outdoors with a conduit or steel-wire-armoured cable (SWA). It's important that you don't damage the cores, which in flex are made up of a large number of fine copper strands. Cut the flex cores to length with side cutters. For the new cable between dimmers only the best option appears to be 3-core+earth. Core identification with numbers acc. Cables with solid cores should never be reused - although during installation they will be bent to fit, these cables are not designed to be flexed and repeated flexing to suit different routes will weaken the cores leading to weak points which could overheat leading to failure. In the UK it isn’t only household wiring that has three wires, inside appliance plugs, there will always be three wires of different colours as well (Some appliances only need two wires. Make sure the earth wire is the longest and the live wire the shortest. I have run in a 3 core SWA and just cut back to find the 3 phase colours (brown, black and grey). Until 31st March 2006, either the old colours or new colours may be used (but not mixed). In your home, the electrical current flows along different types of cable and flex. Dencon Flat 3 Core & Earth - Harmonised Colours - 1.00mm2 6243Y 100m Drum. Trying to wire in a light outside for a one way switch, but the cable is 3 core and earth (brown, black, Grey, copper) and the light only has 3 terminals L, N and E. Removed the switch cover and the black is used in com, brown L and Grey sleeved has neutral in a connector block. Brown This is the live wire. Check the table to see the size you need for different appliance ratings. Fitting new plugs is one of the most straightforward electrical jobs, but it's important to make sure you insert the correct fuse for each appliance. The cable is made up of 3 solid cores, which are individually insulated and wrapped in an outer PVC sleeving. It should be noted that in England and Wales from 1st January 2005, Building Regulations Part P requires that only certified persons carryout electrical installation work, or that the work is certified upon completion to satisfy the local Building Control Department. Cable D (Fig 2) is a three core and earth, this is the ‘3 wire control’ that links the two light switches together. Black. Three core and earth colours I have quite a large reel of 1.0mm three core and earth, which I have used in... new colours in three-core SWA cable The current and wattage figures need be de-rated where cables are run through trunking, under insulation or in any other way which inhibits free dissipation of the heat generated. 3 core and earth 0ld cable colour variation If the wiring in your house is older than the 31st March 2004 and you have had some work done (e.g. Check the cores are fully pushed in with the insulation right up to the terminals, and tighten all the screws. thanks. From our Dencon and Electrical Accessories > Cables & Connectors selection Product Details. Three core and earth cable has three conductors which are colour coded, black grey and brown as well as the earth. Connect the Line (brown) wire coming from the light together with the 3 Core&Earth cable black wire, in to the L1 terminal of the two-way switch. The common sizes of cable are 1, 1.5, 2.5, 4, 6 and 10mm2 - the measurement represents the cross-sectional area of the individual cores. The cable that you are refering to is actually classed as 3 core and earth ( brown , black , grey and non-insulated copper core ). Standard multi-core lines are available with 2 cores, 3 cores, 4 cores or 5 cores, however some manufacturers offer rubber flexible cable variants with up to 19 conductive cores. The old wiring colours used in the UK in domestic electrical situations and in domestic appliance plugs used to be three colours: Black, Red, and Green with Yellow stripes. an extension or partial rewire) you may have a combination of the old and the new ‘harmonised’ colours’. Details about 1.5mm 5m Metres 3 Core and Earth Cable old colours red yellow blue + earth wire See original listing. When terminated at lights sockets etc. Electrical 3-Core & earth cable, If Live = Brown, what colour would switched Live be. Unplug your appliance first, then unscrew the cover of the plug and lift it off. Rated 5 out of 5 by Sam harvey from Overall awesome service Awesome customer service, in … The guide below is for UK (British) electrical wiring, if you live in another country, the colours may be different. Rated 5 out of 5 by Sam harvey from Overall awesome service Awesome customer service, in … This product is no longer available to purchase. Length: 16.50 m Core Thickness: 1.5 mm_ Maximum Rating: 16.5 A - 240 V Shape: Flat Number of Cores: 3 Core Colours: Black/Brown/Grey Coating Colour: Grey Certifications Met: CE/BASEC Standards Met: BS 6004 Type: 3 Core & Earth Cables Package Type: Coil For Use With: Lighting Circuits Brand Name: Wickes When you buy a new one, make sure it complies with BS1363. What are the current UK electrical wiring colours? The safety mechanism is the ‘earth’ wire that connects the appliance directly to earth at all times. earth sleeving must be put on any bare wire. Length: 16.50 m Core Thickness: 1.5 mm_ Maximum Rating: 16.5 A - 240 V Shape: Flat Number of Cores: 3 Core Colours: Black/Brown/Grey Coating Colour: Grey Certifications Met: CE/BASEC Standards Met: BS 6004 Type: 3 Core & Earth Cables Package Type: Coil For Use With: Lighting Circuits Brand Name: Wickes 3. Pre March 2004 the UK standard for '3 core and earth' cable used in two way lighting was blue, yellow and red with a bare copper earth. Special heat-resistant flex is also available for immersion heaters. Red. *From 31 March 2006 all cabling installed in the UK was required to comply with the harmonised cable core colours and must not use the old colours. This is known as two-core-and earth cable. This way, if the plug is ripped off the flex, the live wire will break away first and the earth last. 4.6 out of 5 stars 3. When old and new cables are joined at a socket, or with junction box terminals, the correct colours must be connected. Is there a standard connect for the three colours? This cable is called 2 core and earth, or twin and earth. Blk or Gry. Connect the brown core to the terminal 'L' on the right as you look down on the plug (this will have a clip for the fuse). In 3-phase cable ( brown, what colour is live any doubt your! 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