THE EMPLOYEE CLIMBED A POWER POLE TO REPLACE A BROKEN INSULATOR FOR THE #1 PORTAL FAN FEED. THE INSULATOR AND ATTACHED WIRE WAS BROKEN FROM IT'S NORMAL LOCATION AND HAD BECOME LODGED ON A BRAC KET. UPON CLIMBING TO THE BRAKET, HE PLACED HIS LEFT ARM OVER THE BRACKET, CUTTING IT ON THE BROKEN INSULATOR.