S.Africa's rand weakens for 3rd day on power crunch

South Africa's rand weakened against the U.S. dollar for the third straight session on Tuesday, pressured by concerns over the damage persistent electricity blackouts will have on a stuttering economy. South Africa's troubled power utility Eskom said on Tuesday it had widened power outages and there would be rolling blackouts for a second day in a row. "Eskom blackouts are proving a regular problem," said Bart Stemmet, an analyst at NKC Independent Economists. The currency ha