AS A SAFETY PRECAUTION, THE POWER WAS CUT TO THENORTH SUBSTATION WHILE INVESTIGATING AN INJURY TO AN ELECTRICIAN ATTEMPTING TO REPAIR A 400 AMPCIRCUIT BREAKER. THE JEWELL DOUBLE DRUM HOIST WAS AFFECTED FROM 3:30 PM TO 4:35 PM. THERE WERENO CREWS UNDERGROUND AND THE AFTERNOON SHIFT WASCANCELLED. POWER WAS RESTORED TO THE HOIST AT 4:35 PM.