Originally Posted by
s_v
I should've phrased my question better. I understand that the number for PE refers to its diameter, not lbs test. There is a very broad range of breaking strength among PE lines with the same number. In fact, PE's number corresponds to a dtex value, a Japanese standard for thickness that refers to specific gravity of the line (that translates into the amount of fiber and, therefore, thickness. For example, 0.3 PE should be 70 dtex and so on and so forth. Now, there is still quite a bit of variability in thickness among various PE lines with the same number, because the material of the fiber and the weaving process also affect the density. I just thought that a high end 0.3 PE would be an overkill...
The more research I do, the more I am convinced that the PE rating on the rods is related to the size of the guides and the thickness of the line it allows for. Case in point: I have two rods with nearly same power, length, etc. However, one look at the first guide and you know exactly why one is rated to 0.4 PE and another to 0.8 PE...