I've noticed that whenever I try to wire my generators to multiple MFSU's, the generators stop. The only way for me to charge multiple MFSU's is to have all my generator go to 1 MFSU, and then have the output from that one go to another MFSU and so on.
More info:
I have 6 banks of geothermal generators, each with 12 generators. All of them connect to a central glass fibre line that eventually divides back into 6 banks of 12 MFSU's each.
If I connect one MFSU to the trunk line, it works just fine, but if connect more than 2, the generators turn off.
For the banks of MFSU's I plan to have a cable under each MFSU to feed it, and a cable going from the output face back into the trunk line (which will also feed any machines that need it).