Had a loaded 200amp panel GE split buss, had to add sub panel,75 amp from exsting panel to sub panel.
Then remove 1/25 amp & 40/amp 2 pole to the sub panel,so I could install the 75 & 60 amp breakers on the main panel 60 amp went to GFCI panal out of main to disconect.8/3 /g Ok