200 amp service.
We have a service disconnect upstream of our main panel, which effectively means our neutrals and grounds are still isolated in our main panel (as one does when setting up a sub panel).
As such our Siemens panel has two neutral bars connected with a “neutral tie strap” (insulated copper bar that connects both neutral busbars.
Question is: when setting up a second “daisy chained” subpanel (125amp), where should that neutral (2awg) connect on the main panel’s neutral busbars?
Is that copper “neutral tie strap” rated to handle a situation where excessive current on a left neutral bar travels through it to the mains neutral on the right busbar (and back upstream to the service disconnect)?
Image for reference. Our panel has the green bonding screw removed.