We use 3C+E SY cable at work for wiring the fans to the inverters for large air-con units.
They buy the stuff that's got 3 black cores with numbers on and we ID them at each end with U V W.
They also make us put brown / grey sleeving on the relavent cores..
Now for the question..
Do you need to / is it wise to sleeve the cores with the "phase" colours considering that it's connected to an inverter and the phase rotation can be switched if needed..?
They buy the stuff that's got 3 black cores with numbers on and we ID them at each end with U V W.
They also make us put brown / grey sleeving on the relavent cores..
Now for the question..
Do you need to / is it wise to sleeve the cores with the "phase" colours considering that it's connected to an inverter and the phase rotation can be switched if needed..?