Can some one verify if this is correct manner to find junction box depth. I am using 312.6(A) for one wire per terminal for this. I have (8)4" PVC's each with 600Kcmil thwn cu coming the bottom of box in 2 rows deep of 4 across and leaving out the back. Since there are 2 rows deep of conduits, I assume you use the 2nd column for 2 wires per terminal, therefore the minimum depth needs to be 10"based on 600 -700 Kcmil row in the chart. Is this correct?