Very disappointed in this contractor. Went up to a datacenter in North Carolina that preferred was the subcontractor on and did some medium voltage splicing for them. Nobody there had any knowledgeable experience in medium voltage work. A 3M rep came to certify their employees in a one day crash course for cold shrink terminations. I was expected to stay one week and help them but the first day I arrived nothing was ready to terminate. There were no cables pulled and all the supervision cared about was pointing blame on someone. The outside MV A B feeders were pulled and I completed every 25kv termination and the tie between the feeders. All my terminations tested perfectly. I was given nothing but a hard time the whole time I was there when I worked diligently to get utility power for the datacenter. I came there to help this contractor but the whole time I was questioned about my work by their foremans who had little to no experience with MV work and were looking for blame, I am ncscb certified and didn't need to be questioned and harassed about what I was doing. When I asked for a voltage tester, their safety man didn't understand why a regular voltage tester couldn't be used on MV. An apprentice came with me and they seemed to take his side over mine. I didn't realize the apprentice was more concerned about networking then actually doing any work and helping me. After I finished the primaries and tie I left with the understanding the apprentice would finish taping my torqued terminations that weekend. This was their idea,I specifically spoke with Mike and we agreed that I could return home to Atlanta since they would be able to handle taping and finishing the smaller 1/0 wire inside. I had to return home for my daughter was sick and was admitted at Egleston for a month and almost died. Preferred wanted the apprentice to stay and finish the work and I told them if they needed me back for any reason to let me know. Mike said they could handle it. I later found out that their project manager lied and said I abandoned the job and the apprentice took credit for my work. Apparently they had problems after I left because the whole time I was there I made the deadlines but when I left it was another story. I wouldn't trust this contractor and I wouldn't trust any of their MV work. I suggest not working for this contractor. If something goes wrong they will find blame elsewhere to avoid responsibility. Luckily I took daily pictures of all my work and emailed my project manager everything that was done.