Actually the restriction goes at 10k, from a single source, but the conduit can transfer much more than that. I tested with 3 resonant energy cells sending or receiving at 10k rate. 3 input cells connected to 1 line, which then connected to 3 output cells, and all of them were ticking at 10k.What in the world do you need that much for? Not to mention that each network can, I believe, move a maximum of 2k per tick due to conduit restrictions.
I did same test again, cut the middle line and replaced it with 2 tesseracts. At first only 1 of the output energy cells were draining, meaning that using 1 face of tesseract has a 10k cap. Then i connected the same conduit chain to 2 other faces of tesseract aswell, but only on the input side, and all energy cells were now ticking at 10k again. So also tesseract in receive mode can take in more than 10k RF/t into a single conduit from 1 face. What the real limit is, i don't even know. (That is already more than i'd ever produce... 30k RF with 80 RF dynamos is alot.)