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)?