Question: In a grounded wye - connected system where voltage from the line to line is 4 8 0 volts, what is the voltage to ground?

In a grounded wye-connected system where voltage from the line to line is 480 volts, what is the voltage to ground?
277 volts
240 volts
480 volts
208 volts
In a grounded wye - connected system where

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