When to use phase and line current/voltage

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Tokoyoshi

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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?

 
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

 
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