I bought the wire at an auction, three rolls, one black, one white and
one green, so the colour was not a problem. Each roll weighs about 40
lb and I paid $30 canadian for all of it, quite a bit less than the
scrap value. Six conducters of this size (about 1/4" dia each) should
fit comfortably in a 1-1/2" conduit. I can't find anything in the
Ontario code about doubling up the conductors, but otherwise I plan to
stick to the code.

stan