Board Thread:Questions and Answers/@comment-77.248.22.251-20130312113855/@comment-5627887-20130616185715

Well, if his explodes we can safely say there is an upper limit to the EU/packet a HV Transformer can take. The number I guessed at just seems the most likely between the lower limit of the EU/t generation of your reactor and the upper limit of his reactor. I would imagine your transformer is splitting the output of yours up into multiple 512 EU/t packets, but is sending those packets simultaneously to the Mass Fab, which can accept a max of 512 EU/packet but limitless EU/t on any face (packet size is the important factor). I doubt it would waste any, I think it's a case of they either send everything or blow up trying.