What was found
DURING ENGINE START, 4/0 WIRES FROM NR 1 START CONTROL RELAY TO NR 1 START/GEN OVERHEATED AND SEPARATED COMPLETELY. 1 WIRE WAS SPLICED IAW MM AT BL0. THE SPLICE APPEARS TO HAVE FAILED VIOLENTLY, AND THE WIRE THAT WAS NOT SPLICED OVERHEATED AND PARTED. POST INCIDENT INSPECTION CANNOT DETERMINE WHICH WIRE FAILED FIRST, BUT THE OTHER CONDUCTOR WAS NOT ABLE TO CARRY THE ENTIRE INRUSH LOAD. REPLACE CABLES ENTIRELY FROM START CONTROL TO STARTER GENERATOR, NO SPLICES USED.