You see three wires going into the three insulators from the right, and only two wires going out on the left. Ooops... Yes, this was what was causing our power failure this morning. It seemed the wire broke right at the tie at the insulator?
Joe Maurath added this comment: The tie-wire to line-conductor most likely had an electrical "melt-down". Note that the porcelain insulator in the center where the line broke is of a smaller size. It is quite possible that the aluminum line wire sat there "cooking" upon this lower-voltage-rated insulator for quite some time and finally melted down (literally!) -- Thanks Joe! I'll have to check the other insulators on that phase.