engineer designed-150 amp 3 ph circuit feeds streetlights and handhole boxes in sidewalks for taps for city events.the end of the circuit goes back to the panel and is connected to another 150 amp brkr.yes a 360 degree loop.turn 1 brkr off and the circuit is still hot from the other brkr.same panel.he swears its legal.240.8 i think says no.
