Abstract: AN EMPLOYEE WAS LEAVING HIS ASSIGNED WORK AREA. HIS PATH OF TRAVEL TOOK HIM PAST A 600-AMPERE, 480-VOLT (PHASE-TO-PHASE), FREESTANDING ELECTRICAL SWITCHBOARD. THE SWITCHBOARD DID NOT HAVE A COVER AND WAS NOT DEAD-FRONT. DIRECTLY IN FRONT OF THE SWITCHBOARD, 11 INCHES AWAY, WAS A WOODEN BOX THAT HAD BEEN PLACED OVER A D-C POWER CONVERTER. THE EMPLOYEE WAS CARRYING A 4-FOOT WOOD LADDER, WHICH HAD A LENGTH OF STEEL TIE WIRE WRAPPED AROUND ITS SIDE RAIL. WHEN THE EMPLOYEE SQUEEZED BETWEEN THE SWITCHBOARD AND THE BOX, THE TIE WIRE CONTACTED THE 480-VOLT BUS BARS (277 VOLTS TO GROUND). THE EMPLOYEE RECEIVED AN ELECTRIC SHOCK THROUGH HIS LEFT ARM. HE WAS HOSPITALIZED FOR HIS INJURY AND WAS RELEASED AFTER 24 HOURS.