Well I don't know everything yet and I haven't seen everything yet, but here's a new "first".
From a 120/240 single phase, 3 wire panel, circuits one and three sharing the neutral, circuit one feeding the inside lamps, and circuit three feeding the outer ones. Maybe I'm not understanding something correctly but it seems like that arrangement could be hazardous if something should happen to the neutral.
What I've done so far is put everything on one circuit and recommend electronic ballasts for the ten existing fixtures so that everything will be the same as the five fixtures I am adding.
Then there will be a total of fifteen fixtures,each with four 32 watt lamps for a total of 1920 watts times 1.25 equals 2400, divided by 120v gives me 20. The wire is #12 THHN and I pulled ground wires into the flex whips which were all steel and 8-9' in length.
Did I handle this properly? What would anybody have done differently in this situation?
