Spanner Turner is correct - 747-400 has 4 x 90 KVA IDGs.
747-8 uses the same IDGs as the -400, but they are rated 96 KVA each for the -8 installation.
Most 767 are 2 x 90 KVA, although the Japanese AWACs 767s were 4 x 150 KVA (two per engine)
777 is 2 x 120 KVA, plus 2 x VSCF at (I think) 20 KVA
787 has 4 x 150 KVA (two per engine).
Last edited by tdracer; 24th September 2013 at 00:00.