500 /spl Omega/-m-low enough resistivity for a cable ground shield semicon?

In modern distribution cables, the stress control layers extruded over the conductor and insulation play a critical role in protecting the insulation from stress caused by the conductor, shield wires, tapes, etc. This paper considers the requirements for the conductor and ground shield stress control layers. Finite element analysis suggests that a resistivity of 500 Ω-m is too high a resistivity for a ground shield semicon, as it could result in lightning-induced flashovers between the neutral wires and semicon.