Wouldn't 310.15(B)(6) feeder definition be valid here because it is the feeders feeding the house from the fused (main) disconnect at the meter at the garage?:
IMO, no to both - 310.15(B)(6) doesn't apply, because neither is the main feeder serving the dwelling.
Table 310.15(B)(6), shall be permitted as
120/240-volt, 3-wire, single-phase service-entrance conductors,
service-lateral conductors, and feeder conductors
that serve as the main power feeder to each dwelling unit
and are installed in raceway or cable with or without an
equipment grounding conductor. For application of this section,
the main power feeder shall be the feeder between the
main disconnect and the panelboard that supplies, either by
branch circuits or by feeders, or both, all loads that are part
or associated with the dwelling unit.
Also, because the 125 amp panel is less than 10 feet away (240.21) I do not need a OCD at the tap location (the MB on the panel is required)?
Thanks for the help, I've never done a service like this before