Monday, September 23, 2013

Electrical Wiring Colour


Ref [1]  http://www.accesscomms.com.au/reference/powerplug.htm
Ref [2] http://en.wikipedia.org/wiki/Electrical_wiring_in_the_United_Kingdom

According to [2]
Pre-1977 IEEPre-2004 IEECurrent IEC
Protective earth (PE)Color wire green.svgColor wire green yellow.svgColor wire green yellow.svg
Neutral (N)Color wire black.svgColor wire black.svgColor wire blue.svg
Single phase: Line (L)Color wire red.svgColor wire red.svgColor wire brown.svg
Three-phase: L1Color wire red.svgColor wire red.svgColor wire brown.svg
Three-phase: L2Color wire yellow.svgColor wire yellow.svgColor wire black.svg
Three-phase: L3Color wire blue.svgColor wire blue.svgColor wire grey.svg

According to [1]

Australian 3-Pin Electrical Mains Plug

The domestic mains power supply in Australia is 240V AC, 50Hz. Standard 3-pin earthed power outlets are rated at 10Amps and are usually switched. The 3-flat-pin plug is used in all states of Australia (including its external territories), New Zealand, Papua New Guinea and the Solomon Islands.  Although the configuration is similar to mains plugs used in mainland China, dimensional differences to the plug body may be incompatible with recessed cord socket and prevent Chinese-compliant CPCS/CCC (CCEE) plugs from being legally sold/used in Australia.  Argentina also uses a similar 3-flat-pin configuration as Australia, but with slight dimensional differences and with the active and neutral wires being reversed. These important differences prevent the Argentina-compliant IRAM plugs from being legally sold/used in Australia as incorrect polarity may present an electrical safety hazard.
The Australian mains plug configuration was originally presented as provisional standard C112 in 1937, formalised as Standard C112 in 1938, redesignated AS3112 in 1981 and harmonized with the New Zealand standard and redesignated AS/NZS3112 in 1993.  Australian Standards AS/NZS 3112:2000 and AS/NZS3112:2004 for Australian Mains Plugs now define the requirements for theinsulation of the Active and Neutral pins of the plug.  15Amp and 20Ampconfigurations of the mains plug and outlet are also defined by the standard.
The following diagram shows the Australian plug wiring configuration.
australian 3 pin wall socket for 240 volt ac power distribution Australian 3 Pin Mains Plug 240V AC
The diagrams below show wiring for an Australian 240V mains cord plug and socket. Note the "reversal" of the Active and Neutral wires depending on whether you are wiring a socket or a plug.
Australian 240V mains socket wiring Australian 240V mains power plug wiring

Standard wire colors are:

MarkingFlex conductor colorsBuilding wire conductor colors
ActiveABrownRed
NeutralNBlueBlack
EarthEGreen/YellowGreen/Yellow

Older flex and premises wiring will use the following colors:

MarkingFlex conductor colorsBuilding wire conductor colors
ActiveARedRed
NeutralNBlackBlack
EarthEGreenGreen
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