Hmmmm.
16-3/12 deep gems....18 CI each
16 x 18 = 288 CI
2.25 CI/#12 = 128
From memory.....
16 'loads' 16 x 2 = 32 + 1 grd = 33
6 feeds 6 x 2 = 12 + 1 grd = 13
16 devices = 32
22 clamps = 22
Total above 100 +/-
100 x 2.25 = 225 CI required
Yes, it was tight
John