When to use phase and line current/voltage

[Tokoyoshi]

I understand the phase and line voltage/current when it comes to the delta and wye diagram. However, how do i know when to use either phase or line when the voltage/current are given in motor, transmission, per unit, or generator problem?

 

[Phenomenon083]

That's a very generalized question. Be specific.

 

[Messi]

I understand the phase and line voltage/current when it comes to the delta and wye diagram. However, how do i know when to use either phase or line when the voltage/current are given in motor, transmission, per unit, or generator problem?

Not sure if I understand your question correctly but unless stated that it is Phase Current/Voltage assume it is Line I or V