When wiring 347v lighting it as been the general accepted practise to use three different wire colours. According to the CEC three phase circuits have to be red-black- blue and neutral white. When I am constantly seeing the colours brown-orange- yellow used for three phase lighting is this correct and if so where does this colour code come from.
In many areas of the USA, although it isn't a code requirement, they use brown-orange-yellow for 277/480 volt systems.
In Canada, the colors orange and brown are required for single phase circuits supplied from isolated power supplies in patient care areas.
24-204
Ed
<font color="#a62a2a" size="1">[ October 26, 2003 12:07 AM: Message edited by: electric-ed ]</font>
Thank you for the reply. However i would still like to know if the method of using brown yellow orange for 347volt lighting is actually legal not just standard practise. Everybody I ask say that that is the way it as always been done.
<font size="2" face="Verdana, Helvetica, sans-serif">No, it isn't.i would still like to know if the method of using brown yellow orange for 347volt lighting is actually legal
4-036(3) requires all three phase circuits that are color coded to be red, black, blue, and white.
Ed
Thanks Ed, That is what I thought.
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