There's a good article in this months fishing monthly by the platypus braid manufacturers talking about the US versus japanese methods of rating lines. They bascically say that the yanks don't have the same regard for diameter that the japanese do. Its all about selling your line at 40lb knowing full well that it actually breaks above 50lb, just so you can say that your 40 lb is better than another brands 40lb which breaks as stated - and in the process the lines can be quite bulky. The Japanese in contrast build more or less to line diametre spec in the PE# system, so their breaking strains are more closley related to what the diameter suggest.
Its given me the shits lately because the line counter on my ishidai needs PE# specs. So if I put on a US brand 40lb, program the counter for PE4 , it can actually out by up to 45m when the counter says 300m is out- way out!! I knew it would be out by a bit but not that much.
If you had one of those line counter electrics bottom bashing at browns in 500m you'd have no idea where you were at if using non PE# line.
So I wanted to know the PE# system diameters so that I can buy only the yank stuff that has corresponding diameters. ie some yank 50lbs are getting fat for PE6 type diameters.
Apparently the daiwa accudepth and sensor 8 break 1:1 PE:lbs. The Saltiga Hyper PE is way over rated though
PE3 50lb
PE4 60lb
PE5 75lb like the best jigman