The contacts that touch the plug ends were made so tight (narrow) that I couldn't get the plugs into the sockets. I ended up breaking one of the contacts trying to push the plug in the socket. Found myself taking the housing apart to separate them a little so the plug could fit between them. Also had to bend some of them straight so they were not touching the opposite row so not to create a short. Definately was not expecting this type of shoty work from APC.