Two legs of a wye system is not 2 phase.
It is simply two legs of a three phase system, although some utilites call this a 120/208 network connection.
Use the normal 3 phase formulas to determine your neutral current, but of course one current will equal 0.
One common formula is:
In=SQRT((Ia*Ia+Ib*Ib+Ic*Ic)-(Ia*Ib+Ib*Ic+Ic*Ia))
so in your case:
In = SQRT(12.5*12.5+14.2*14.2)-(12.5*14.2))
In = SQRT(180.39)
In = 13.43A
[This message has been edited by JBD (edited 03-07-2006).]
