Is it legal to install a 208v photo cell so it switches one side of the 2 phases? I would think running it through a 2 or 4 pole contactor to switch both sides would be better. I found one done this way and think they had trouble with it, (not to mention that one side would still be hot if you were working on it). It was for some parking lot lights. I put a contactor controlled by a photo cell on it.
