Main wires entered lower box/disconnect/transfer switch (sorry dont have inside pic) and attached at topside lugs. There were another set of lugs on topside which fed the “main panel” above, which was wired up like a regular main panel (bonded, combined neutrals/grounds, etc.) The lower box/disconnect then had the lugs at the bottom with wires to generator (when the handle/switch is pulled down.) There was no OCPD in the lower box/disconnect/transfer switch. Now, this lower box/disconnect is considered a transfer switch and not a main service disconnect, correct? Or is it considered a main service disconnect?
(pay no attention to sub panel on the right)
Thanks in advance.