My worst experience with EC doing the wiring to date was a small office. He ran a separate data cable to each of the 8 offices, and 1 single stinking 3 pair voice cable was run up and down the hallway, dipping down the wall, half-ass wedged into an insert, then back up and on to the next. I showed up, saw the 66-block with 3 pairs of wire with the ends stripped and twisted onto the terminals, and nothing else. It was difficult to know whether to laugh or cry, and I had a wonderful time explaining to the client how badly his EC had screwed him.