I may have typed that in a confusing way. I am not replacing the existing pipe. Just the wire in it. On some of the larger homes in my area a branch circuit may need to travel over a hundred feet before it even starts splitting off. 7500 sq foot homes. would you still price by number of openings? There has to be a standard way of pricing this.
ok, you are repulling emt that has old solid wire
with cloth covering, so it's been in there since
what, the 1930's? and it was pulled with whatever
lube they used in the 1930's, or 20's maybe,
so for all we know it was wagon wheel grease.
and you don't know what goes where, and tugging
on it won't tell you much other than it's stuck good.
the quickest way would be to split them and tone them.
so, you have nice little small junction boxes with fat
thick wires in them. glued with sheeps fat or whatever.
getting the wire out of the pipe is gonna be time consuming.
if there is a grip you can put on small wire and a mechanical
hand crank boat winch tugger to break them loose and get the first few
feet out, i'd look to something like that. i think maxis makes one
you probably won't have enough wire on the end to tie on the new wire
so you will have to refish..... buy yourself a brand new stainless steel
fish tape, a greenlee 200 footer... if you've never used a SS fishtape,
just trust me, you'll thank me later.
i'd try hooking on 1,200 lb mule tape onto the old wire and try pulling
that in when the wire comes out....
i'd figure two weeks for two guys. you'll need a helper for this one.
2500' spools of simpull #12 thhn stranded, you'll probably use two
of each color, so 20,000 feet, plus the devices..... and some of
the boxes won't accept wire AND a GFCI...... so there will be some
changes.
160 hours labor, and the material, and you should be ok. not being
able to just glance at open walls, and see what you are pulling is
gonna slow you down a lot..... and lets not talk about chinese hickeys.
they were usually used only on ridgid, but i've seen emt with some
radiuses that looked like process pipe guys bent them, or used the
curvature of a tennis ball as a pattern.
good luck, and have fun.