Pulling Tension The recommended maximum pulling tension is determined by the strength of the copper. Attaching the pulling lines to the copper using a pulling ring is highly recommended.   Installation Bend Rules   The installation bend radius has been determined based on a simple rule: the bend radius must be at least 10x the cable diameter.For example: If the cable is 1.0" in diameter then the safe installation bend radius is 10.0". Wheels and pulleys should be at least 20" in diameter (10" radius).    To read more Click Here