For distribution lines around homes in TX:
Single phase to ground is normally 7200
13.8kv
Two phase line is 14.4kv
there is 12470
11,000
Old 4160

3 phase line in combination can carry a wallop to trees, roofs etc.
Things are dependant of Delta or Wye distribution capacitor banks down line
can smooth out voltage if there is line lag. Summer time will lag the lines.
I was a HV Power Linesman for almost 16yrs back in the day.