1.   First an underground electrical cable failed, shutting down a cooling tower.

2.   Georgia Power investigators could not determine Wednesday why the first cable failed.

3.   Now, for reasons that are still unclear, the cable has failed.

4.   Repair teams had not determined whether the cables failed because of the hot weather and high demand for air conditioning that it created.

5.   Repair teams had not determined whether the cables failed because of the high demand for air-conditioning created by the hot, humid weather, Con Edison said.

6.   He said that until the company knew what caused the new cable to fail, it was difficult to say when it would supply power again.

7.   It is not known what caused the power cables to fail, and a commission of experts says it may take six months to a year to find out.