Stumped by Phase C overheating

[zog]

Contactor had a small 'blister' on the back side from the previous overheating, and was not pulling in all the way on the C phase, causing a 20 amp imbalance. Re-placed with new...works like a champ.

Thanx for the help gent's.

then the testing wasnt done correctly. That should have been an easy find with a micrometer (Or DLRO, or Ductor)