Fail inspection.

[Little Bill]

The #6 ! If he had full size (120 amp in his case if I recall correctly) conductors then any sub-panel with a rating that high would be considered to be protected by the (feeder main).
Once he reduced to a #6, that conductor meets the Art 240 definition of a "tap" and must be protected per the 240.21 tap rules.
Did I overlook or misread something ?

No, it was me that missed the #6!:slaphead:

Edit: Just so you know I'm not totally crazy I went back and reread the thread. You mentioned tap before the OP mentioned the #6. I was wondering how you concluded it was a tap before that. But you see this more than me so I guess you have a "nose for it"!

 

[kwired]

OP said he had 120 amp overcurrent device which isn't a standard size, might want verification on what that device actually is. Standard sizes in this general range are 100, 110, 125 and 150.

I don't recall seeing anything on conductor size other then 6 AWG for the tap conductors.