Four conductor cable to power and control many devices

[Sparky1949]

Has the use of a four conductor cable to power and control several devices gone beyond the irrigation market? (Besides the Color LED strip lights.)

If so, where is it being used?
Who are the manufacturers[highlight #FCE94F][/highlight]?

 

[robert122]

The usage of four conductor cable is not limited to irrigation. In any three phase with neutral circuits, four conductor cables are used. In many industrial and even in some of domestic applications four core cables are extensively used. In all the industrial applications involving three phase components like motors, blowers, furnace etc 4-core cables are used.