Electrical equipment rack and cable management arm assembly

A cable arm assembly manages cables between an equipment rack and an equipment unit slidably installed in the equipment rack. The assembly includes two cable arms, each having an offset bracket at one end, which are pivotally joined to provide a minimum bend radius for cables. A first hinge plate is pivotally attached between the first cable arm and a rack mounted bracket. A second hinge plate is pivotally attached between the second cable arm and a bracket mounted on the equipment unit. Fingers extending from the hinge plates limit the pivotal movement of each plate with respect to its bracket. The finger on the first plate prevents the arm assembly from hitting the opposite side of the rack as the equipment unit is sliding forward. The finger on the second plate prevents the two arms from locking when the equipment unit is extended fully forward.