UK & EU: IEC AC (Single & Three-Phase) Wiring Color Codes UK New (IEC) Wire Color Codes Single Phase AC 230V BROWN = Phase , Hot or Line, (L) BLUE = Neutral (N) GREEN / YELLOW = Earth Conductor “Protective earth” (PE) Three Phase AC 415+ V BROWN = Phase 1 or Line, (L1) BLACK= Phase 2 or Line 2, (L2) GRAY= Phase 3 or Line 3, (L3) BLUE = Neutral (N)
| UK Old* | UK New* | |
|---|---|---|
| Phase 1 | Red | Brown |
| Phase 2 | Yellow | Black |
| Phase 3 | Blue | Grey |
| Neutral | Black | Blue |
What is the International Color Code of 3 phase?
UK & EU: IEC AC (Single & Three-Phase) Wiring Color Codes UK New (IEC) Wire Color Codes. Single Phase AC 230V. BROWN = Phase , Hot or Line, (L) BLUE = Neutral (N) GREEN / YELLOW = Earth Conductor “Protective earth” (PE) Three Phase AC 415+ V. BROWN = Phase 1 or Line, (L1) BLACK= Phase 2 or Line 2, (L2) GRAY= Phase 3 or Line 3, (L3) BLUE = Neutral (N)
What are the three phase colors?
Three phase installations have traditionally used red, yellow and blue for the phase conductors and black for the neutral conductor. These are replaced by the colours of brown, black and grey for the phase conductors and blue for the neutral conductor (Regulations 514-03-01 and 514-04-01).
What are the NFPA color codes?
There are exceptions, but some examples from Article 13 are as follows:
- Equipment grounding conductor: Green insulation, with or without one or more yellow stripes
- Grounded AC circuit conductor (i.e., the neutral wire): White, gray, or three continuous white stripes on insulation that is not green, blue, or orange
- Grounded DC circuit conductor: white with blue stripe
What are the color codes for house wiring?
Wire Color Codes For United StatesPhase 1: BlackPhase 2: RedPhase 3: BlueNeutral: White. A green wire, a bare wire, or a green wire with a yellow stripe is used as a ground wire. If necessary, a simple light switch wiring diagram is provided below. A dimmer switch is shown in the diagram below.
What is the color code for 3 phase wiring UK?
Three phase installations have traditionally used red, yellow and blue for the phase conductors and black for the neutral conductor. These are replaced by the colours of brown, black and grey for the phase conductors and blue for the neutral conductor (Regulations 514-03-01 and 514-04-01).
What are the 3 phase colours in the UK?
The three-phase phase cable colour identification is changed from red, yellow and blue to brown, black and grey. Where a circuit includes a neutral or mid-point conductor, it will be identified by the colour of blue instead of black.
What colour wires are 3 phase?
3-Phase Wire Color CodesPhase 1 – Black wire.Phase 2 – Red wire.Phase 3 – Blue wire.Neutral – White wire.Ground – Green, Green with a Yellow Stripe, or Bare Wire.
Which colour is neutral in 3 phase supply?
Black colorIn case of a three phase power supply, the combination of Red, Yellow and Blue are used for the active line power conductors, Black color for neutral conductor and Green or Green – Yellow for protective ground.
What color wires go to L1 L2 L3 UK?
FunctionOld conductorNew conductorLine 1 of a.c. RedL1Line 2 of a.c.YellowL2Line 3 of a.c.BlueL3Neutral of a.c.BlackN2 more rows
How do you wire a 3 phase plug UK?
Open up the three-phase plug using a screwdriver. ... Strip the wires you will be placing in the plug. ... Insert the stripped wires into the sockets in the plug as follows: black in 1, or L1; red in 2, or L2; blue in 2, or L2; white in 0; and green in the picture with the line and T symbol.More items...
What colour are electrical wires in the UK?
The new electrical wiring colours in the UK are green and yellow for the earth wire; brown for the live wire, and blue for the neutral wire. The old electrical wiring colours in the UK are green and yellow (or bare) for the earth wire; red for the live wire, and black for the neutral wire.
How many wires does 3 phase have?
four wiresThree-phase has four wires: three actives (called phases) and one neutral.
What colour is Live wire UK?
BrownAnswered by Dave, Electrical Safety Expert The UK changed the standard wire colours in 2004: The live Red becomes Brown. The Neutral Black becomes Blue. The Earth wires continue to be Green and yellow.
What colour is neutral UK?
blueWhat colour is the UK neutral cable? The UK and Europe's neutral wire cable colour is blue.
What are the color code standards?
Color Code Chart Per NEMA & ICEA Method 1/K-1Cond. No.Base Color1st Tracer Color19BlueRed20RedGreen21OrangeGreen22BlackWhite56 more rows
What is the colour of phase wire?
Red – Red wire signifies the phase in electric circuit. It is he live wire which cannot be connected to another red wire or black wire. Red is used in some types of switch leg.
What color is phase 1?
Phase 1 - Black. Phase 2 - Red. Phase 3 - Blue Neutral - White Ground - Green, Green with Yellow Stripe, or Bare Wire. If one phase of your wiring is at a higher voltage than others, using a high-leg connection, wires should be marked orange for that phase.
What is the purpose of color coded wiring?
Electrical wiring color coding standard for three phase electrical applications are standard ized to aid the identification of individual wire phases. Wiring color codes for AC and DC power distribution circuits have changed on numerous occasions and vary depending on region.
What color wire is used for 480 VAC?
The USA has their own wiring colors for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC. Australia also has a different wiring color standard. The UK's new cable colors for plugs are now harmonized with Europe's power cable colors for AC & DC. Most of Europe abides by IEC ('International Electrotechnical Commission') electrical wiring colors code for AC branch circuits.
What is the color code for a three phase motor?
Conductors of a three-phase system are usually identified by a color code, to allow for balanced loading and to assure the correct phase rotation for induction motors. Colors used may adhere to International Standard IEC 60446, older standards or to no standard at all and may vary even within a single installation. For example, in the U.S. and Canada, different color codes are used for grounded (earthed) and ungrounded systems.
What color is used for grounded conductors?
National Electric Code has color requirements for grounded conductors, ground and grounded-delta 3-phase systems which result in one ungrounded leg having a higher voltage potential to ground than the other two ungrounded legs. Orange is only appropriate when the system has a grounded delta service, regardless of voltage.
When is orange appropriate?
Orange is only appropriate when the system has a grounded delta service, regardless of voltage. ^6 The U.S. National Electric Code does not specify coloring of phase conductors, other than orange for grounded delta.
Is yellow allowed in 2007?
Yellow is no longer permitted in the 2007 revision of wiring code ASNZS 3000. European color codes are used for all IEC or flex cables such as extension leads, appliance leads etc. and are equally permitted for use in building wiring per AS/NZS 3000:2007.
What color is phase 1?
The local practice in the US follows and uses the Black color for Phase 1 (Hot 1) or Line 1 (L1) and Red for Phase 2 (Hot 2) or Line 1 (L2). In addition, the following wiring color codes are used in the US and Canada for Two-Wire Grounded, Two-Wire ungrounded and Three Wire grounded DC power systems.
What is the IEC DC wiring color code?
The following IEC DC wiring color codes are used for Two-Wire Grounded, Two-Wire ungrounded and Three Wire grounded DC power systems.
What is the single phase supply in Japan?
As the name suggests, Japan always does weird things. The single phase supply is 100V (Line to Neutral) and Three Phase supply is 200V (3 Lines, No Neutral). For wow reaction, Check the common neutral and 3rd Phase colors. They are the same i.e. white (Read the following note after the three phase codes for explanation).
Which countries use the IEC color code for DC?
Other Countries like China, Russia, KSA and UAE now follow the IEC Cable color codes for DC. But don’t trust the cable insulation colors in these areas as electricians use old as well as new color codes for both AC and DC.
What color is used for neutral wire?
Canadian Electric Code “CEC” wiring color codes are similar in practice with National Electric Code “NEC” expect that White color is used for Neutral Wire and Green or bare conductor is used for protective ground. In some cases, the 1st and 2nd phase (lines) colors are in an inverse position as compared to NEC.
What color wires are used for a PG?
The mandatory colors for power wiring in National Electric Codes (NEC) are Green, Bare or Green/Yellow (Yellow Strip or band on Green) for Protective Ground “PG” and White (alternatively Grey) for Neutral Wire. Any other colors expected the above mentioned can be used for Live (Line or Hot) wires.
Which countries follow the IEC electrical codes?
As mentioned above, most of the Europe Union countries and UK, China , Russia, Hong Kong, Singapore, Ukraine , Belarus, Kazakhstan, Israel, Turkey, Argentina, South Africa, KSA (Saudi Arabia), UAE (United Arab Emirate) and Malaysia are following the IEC “International Electrotechnical Commission” wiring codes. Keep in mind that some of the above mentioned countries such UK, Russia & China etc were using their own “Old wiring color codes” but now follow the IEC power circuit wire codes.
When did the new wiring colour become mandatory?
The new wiring colours became mandatory in 2006, although they had been in use since 2004. It may seem confusing to have two systems, but the new system was actually introduced so that the UK’s wiring colours match up with other European countries. This explains why you might hear the new system referred to as the ‘harmonised’ system.
What Are the New Wiring Colours?
As you can see in the image below, the new (current) wiring colours in the UK are:
How many wires are in a three phase system?
Three-phase systems don’t always have a neutral wire, so they can either consist of fives wires (three lives, an earth, and a neutral) or four wires (three lives and an earth).
What is the difference between single phase and three phase?
Single-phase is by far the most common system and is used in most homes, whereas three-phase suppli es can cope with large amounts of power so are used in industrial buildings. The domestic wiring systems we’ve discussed so far are single-phase, with three wires (earth, live, and neutral). Three-phase systems have three separate live wires – ...
How many AC supplies are there in a single phase system?
With a single-phase system, there’s one supply of alternating current (AC) with a voltage that varies over time in unison from positive to negative, so there will be moments when no power is supplied. On the other hand, three-phase systems can be thought of as three AC supplies working together with their sine waves out of phase, so power is always being supplied.
What color is the live wire?
The live wire is brown in new systems and red in old systems.
When did color codes start?
It took until 1928 for wire color coding to make its debut. The National Electrical Code® (NEC) was the first to reference it, and today continues to set the standards for the electrical industry. Following a uniform color code makes it easier to assess electrical wiring, and ensure safety among licensed professionals and homeowners alike.
What does color mean in electrical wiring?
For electricians, wire colors indicate how power moves within circuits.
What is the NEC code for wires?
Though there are international wire color codes, the U.S. follows the National Electrical Code ® (NEC). The code is identified as NFPA 70 ® because the NEC is sponsored by the National Fire Protection Association. Though not a federal law (states can choose to adopt it), it is approved by the American National Standards Institute (ANSI). Every three years, the NEC reviews, amends and adopts the latest code. The current NEC was last updated in 2020.
What does a white wire mean?
When you see a modified white wire (with black or red tape wrapped around it), it signals the wire is hot, not neutral. You may see these in 240-volt outlets replacing the red wire as the second live wire.
What is secondary hot wire?
Indicate a secondary hot wire, one that carries electricity. You will need to shut off the circuit breaker before working with these wires. They can be used to interconnect smoke detectors, power wall switches for ceiling fan lights, and to power outlets for a 240-volt appliance like an air conditioner, electric water heater, stove or dryer.
Why color wires?
Simply put, color makes it easier to work with wires. Just ask those who come in frequent contact with wires, mainly:
Is there extra cost for wire coding?
There is no extra cost for following the wire coding standards. The thin, PVC sheath that wraps each wire costs the same for each color.
Nec Wiring Color Codes For AC – Us & Canada
IEC Wiring Color Codes For AC – UK , EU & Other Countries
China & Russia Wiring Color Codes
Australia & New Zealand Wiring Color Codes
Japan Wiring Color Codes
India, Pakistan, UAE, KSA & South Africa Wiring Color Codes
- India and Pakistan including the other subcontinent countries as well as UAE (United Arab Emirate), KSA (Kingdom of Saudi Arabia) and South Africa AKA “Proteas” (They adapted the IEC now) follow the old UK wiring color codes i.e RYB (Red, Yellow and Blue for Three phase) and Red & Black for Phase and Neutral respectively. Single Phase 230V AC 1. RE...
Israel Wiring Color Codes
Indonesia Wiring Color Codes
Nec Wiring Color Codes For DC – Us & Canada
IEC Wiring Color Codes For DC – UK & EU