Being a CE is definitely fun--when I get to do my rate. I have been in 3 years/2 deployments, and the most electrical work I've done was in A School.
In battalion, I've worked 2 electrical projects. One was very basic overhead lighting, and took less than two weeks to complete.
The other time was pretty much the same wiring, but I was coming in to fix the non-functioning mess the previous battalion had set up. That took three months to hunt down all the wild fuck-ups they left in there (example: hot wires leading nowhere, just snipped and left to chill in the middle of conduit runs). The whole time I was trying to convince my 1st class to just let me rip it all down and wire it again. I could have done it faster, safer and we had all the materials to do it on hand. 1st class refused, because he was never around to see exactly how horrifying the previous guys work was.
I expect that building will burn down in a few years, because I know there's no way I fixed everything.