It is here: Update to 3-Phase PLL sketch
No, if you are reading Phase 1 correctly, Phase 2 and Phase 3 will both read -0.5 × the value they ought to read, even with a pure resistance as the load. Look at the rotating phasors on the ‘Learn’ page, the length of the yellow and blue arrows projected onto the red arrow is half, and in the opposite (negative) direction.