As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: "ELEC AC BUS L2" MESSAGE ON EICAS, PILOT DECLARED EMERGENCY LANDED WITHOUT INCIDENT. MAINTENANCE FOUND TERM END BROKEN AT TS16002 TERM BLK TERM T1 WIRE W801018-0005. REPAIRED PER ESPM 20-30-14 AND SL 787-SL-24-055-A. L2 GEN OPERATIONAL.