Lighthouse, The 4-conductor cords are round not flat like the 3-conductor cords. All of the cord sets come with a strain relief (clamp) but I and many others have found them to be almost useless. Most of the 2-screw cable clamps that are used for NM cable are also approved for flexible cords so that is what I use instead of the clap provided.
Curt
[This message has been edited by caselec (edited 01-08-2003).]
