If you are installing a 2 wire AC or MC cable in a building that has 480-277V 240-120V, the code says the ungrounded conductor has to be reidentified for each system. My question is:
Do you special order MC or AC cable with different colored ungrounded conductors or use 2 conductor cable and re-identifiy the conductor?
I may have read that smaller than #4 can not be reidentified (exception do apply to grounded conductors).
You can buy type M/C &A/C cable with the different color Brown Orange Yellow for 480/277volts but it is not used that much out there. on the larger cables we use tape to re idetifie at splice points , but on #10 #12 Circuits we just mark the box covers with the voltage
