I'm wondering if this is code compliant. I saw a 277 volt lighting application, they used M/C cable and junction boxes in between conduit runs. The proper color as everyone knows for 277V is B.O.Y.. The M/C of course is black, red, white and green. Where the last connection to the fixture were in pipe they installed BOY as phased. Is this allowed, or do you have to have it tagged, or a continuous color? Any replys would be appreciated. TY