  Conductor on a rounded core (CORC\textsuperscript{\textregistered}) cables
with current densities beyond 300 A/mm$^{-2}$ at 4.2 K, and a capacity to
retain around 90 $\%$ of critical current after bending to a diameter of 3.5
cm, make them a strong candidate for high field power applications and magnets.
In this paper, we present a full 3D-FEM model based upon the so-called
H-formulation for commercial CORC\textsuperscript{\textregistered} cables
manufactured by Advanced Conductor Technologies LLC. The model presented
consists of tapes ranging from 1 up to 3 SuperPower 4mm-width tapes in 1 single
layer and at multiple pitch angles. By varying the twist pitch, local
electromagnetic characteristics such as the current density distribution along
the length and width are visualized. Measurements of macroscopical quantities
such as AC-losses are disclosed in comparison with available experimental
measurements. We particularly focused on the influence of the twist pitch by
comparing the efficiency and performance of multiple cables, critically
assessing the optimal twist pitch angle.
