Disclosed herein is a clamp system for affixing at least one wire bundle, having any one of various sizes, to a rail elongated in a lateral direction. The clamp system comprises a first clamping component comprising a first concave engagement surface and configured for fixed attachment to the rail. The clamp system also comprises a second clamping component comprising a second concave engagement surface and configured for slidable attachment to the rail. When the first clamping component and the second clamping component are attached to the rail, the first concave engagement surface and the second concave engagement surface oppose and face each other to enable capture of the wire bundle therebetween and a distance between the first concave engagement surface and the second concave engagement surface is adjustable.