CoolHand posted:If the postwar ZW is on a completely separate circuit (lights & accessories) than the modern ZW (track power) why would it be beneficial to phase them? What did I miss?
Did you watch, listen and understand the video to know that out of phase contact could yield 30v-50v pretty easy (or 0v). (I forget if notes outlets throughout a home/room or (old) power strips are not necessarily in phase with each other.)