5.2. ADHESION PERFORMANCE 5.2.1. For the Strength Member Mount a specimen such that a normal force at 11 Kg/mm² is maintained at the tangent point of the cable. There shall be no perceptible buckling, slippage or rupture of the sheath and/or insulation over the strength member at any point when tested in accordance with Paragraph 7.2.2 of REA PE-7.