Why is S_{RATED}=I_{RATED}V_{RATED} Insufficient for Synchronous Generators?

[sandy.bridge]

Hey all,

If we are given a synchronous generator with the following nameplate values 10MVA, 13.8kV, 2 pole, 60 Hz

why is it not sufficient to go
$$S_{RATED}=I_{RATED}V_{RATED}$$

as we did for transformers?

My reason for asking is because I am trying to determine the voltage regulation of a particular generator. However, if I determine the full load current using the above formula, I get an absurd result.

 

[dlgoff]

Is the generator a 3 phase machine? If so, the apparent power = √3 Voltage_line ⋅ Current_line.
13.8kv is a line voltage.

 

[sandy.bridge]

How silly of me. Honestly, this entire time my issue was that I did not divide S by three. Thanks!