Installing a manual transfer switch for our generator to run some lights/outlets in our house. Nothing major.
We have a main panel on the side of our house that then feeds to a panel on our garage panel. The garage panel has all the breakers we'd like to wire into a transfer switch.
All of the research I have done is wiring the transfer switch into the main panel. I'd like to do it to the subpanel, but am unsure if the grounding the neutrals are okay at that location. The entire electrical system was upgrade a few years by a professional. I read some about the possibility the subpanel does not have a ground going back to the main panel. Is this a possibility? Can I tell by looking inside the subpanel?
Any help would be appreciated - I was fully prepared to move forward with this until I realized the panel I was going to install into is just a sub-panel