Maybe some of the other guys in the Chicagoland area can help me with this one. I don't do new residential work, but I run into it enough. I rarely see anything but 1/2" EMT, and I'm not sure, but I don't think it usually has more than 2 or 3 wires in it. It's all low bid work, so I'm wondering if it's the most economical way. These guys that knock 'em out around here really have it down to a science (production type work).

By the way, I saw a really pretty job a few weeks ago where the electrician had run about 8 pipes parallel and very close together through a couple bends. They all went the same way for about 30'. I just thought it might have been easier to run some 3/4".

I wonder if it has something to do with the time & material of having an extra junction box to split them up down the road.

Dave