Your image link appears broken, so it's going to be hard to tell how you're set up. However, MFSUs don't need HV transformers, as they're not putting out extreme voltage. That could be screwing up your power system. For Daemon, the same is true of HV solar arrays. Also be sure the transformers are facing the right direction, as warpspeed mentioned.
The power was too high, since that's the only thing that causes machines to explode (nothing else does it, except creepers and things of that nature). I'm guessing misplaced transformers, or power cable that found a route around them. I've personally lost 24 Recyclers all at once to a route-around.
P.S. Yes, Mass Fabs are a very bad thing to feed EV to.