The Neher-McGrath Calculations is a method for calculating underground cable temperatures and cable ampacity ratings and RHO Value.
Examples include the characteristic resin ducts formed in the xylem as part of the tree’s defense. North American conifers in the genera Pinus, Picea, Pseudotsuga, and Larix have xylem resin ducts that are constitutively present. Meanwhile, Abies and Tsuga, in addition those constitutive, form ...