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Red, Yellow or White, Blue
In the US: A phase - brown B phase - orange C phase - yellow neutral - gray ground - green or green with a yellow stripe. Note that the ground color is the only one mandated by code. The others are simply industry standard usage.
A three phase system will have 3 phase branch circuits and no neutral.
A: Brown B: Orange C: Yellow Neutral: Grey Ground: Green or Green with a yellow stripe.
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Telling the colour of wires has nothing to do with using a volt meter. Phase wire colours can be any colour except green and white. Usual 3 phase colours are red, black, blue. Single phase colours are usually red and black. Neutrals are always white and ground wires are always green or bare.
The IATA aiport code for Nadi International Airport is: NAN
122002
XXD100,030 where XXD is the international 3-character currency code.XXD100,030 where XXD is the international 3-character currency code.XXD100,030 where XXD is the international 3-character currency code.XXD100,030 where XXD is the international 3-character currency code.
CPT Code 78315 - Bone and/or joint imaging;3 phase study
It depends. In a typical US residence with 120/240v single-phase power, the ground wire will be green, the neutral will be white, and the hot conductor will be either black or red depending on which phase it is connected to. Odd numbered breakers (1,3,5, etc.) are black, and even numbered breakers are red. You will measure 120v from black to white, also 120v from red to white, but 240v from black to red. In a commercial building with 3-phase 120/208 power, ground and neutral are the same color, but there are 3 hot colors - black (a-phase) red (b-phase) and blue (c-phase). As you run down a line of breakers from top to bottom they will be wired: black red blue black red blue etc. You will measure 120v from any of the 3 hot colors to white (neutral) but 208v from black to red, red to blue and blue to black.
Whatever you want as long as you color both ends the same :-P