First, with the current setup, the reactor can run 15time on it's 2 hour 40 minute cycles (thats basically 30 hours) without cooldown. However, the base cooldown time is 7 minutes (multiplied for each consecutitive cycle, as in 3 cyckes = 8 hours runtin, 21 minute cooldown). During the cycle, it produces 22,000,000 EU at a rate of 105.1EU/t
The reactor produces energy, but the MSFUs put it out as HV (512eu/t). This would destroy most machines, so it needs to be converted down to LV for general use, however the MASSFAB uses 512EU/T, which is out current output.
So, to get the Massfab running, all we need is a permanent building you want it in. Then, we run Diamond Cable to it. However, the Massfab requires 1mil energy to produce 1 matter, so for each reactor cycle, it can run a maximum of 22 times. Also, the massfab requires 34 scrap to run at maximum efficiently, so to produce 22 matter efficiently, you need:
time: 2hours 40 minutes
Scrap: 748 scrap
energy: 22mil EU (roughly)
I suggest that if you want to run the massfab, you put uranium in the open slots in the reactor to replace the stock of the energy you will use.
For other energy uses, we need LV power, this will be accomplished by using 3 transformers to convert it:
HV->MV->LV It has to be constructed carefully, because a tiny slip and the whole thing explodes.
Is that simple enough, or should I try to make it easier to understand?