This is a mother-in-law new construction add-on to main home.
At the panel, 50 amp breaker labeled for range is wired with 3 conductor CU. The two (2) #6 awg are connected to the breaker, with the smaller bare #12 conductor spliced and extended to the neutral bus.
Shouldn’t the ‘neutral’ be the same size as the 2 hots?
Shouldn’t 4 wire conductor have been used so it would be grounded?
Also, the conductors for upper right 60 amp breaker are not the right size !