tie-bar vs ground wire

Any concern with the neutral tie-bar being so close to the ground wire in a subpanel?

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IMO no, the EGC terminal and the tie bar jumper are factory installed so the distance between them is already adequate.

Cool. Thanks Robert.

What are you expecting to happen?

I agree with Robert. Now, a poor installation could lead to the bare EGC being pushed too far into the lug and would result in possible improper case to neutral connection resulting in contact of the grounded and grounding components. However, you inspected it and that is not taking place so I would move on.