Rick Christopherson
Senior Member
To follow-up further; for any point, C, in electrical space, your statements that the "voltages are phase opposed" is true, if and only if, A>C>B or A<C<B. For all other reference points C, your statements are false. That is why your statement that the "voltages are phase-opposed" is relative, and not absolute.These statements are absolute because they still hold true regardless where your chosen reference point exists. Your statements are true only for a specifically chosen reference point. They are therefore, relative statements.
The relationships that A>N>B and A<N<B is absolute, because these statements hold true for all reference points C, including when C=N or when C lies outside of A and B.