The two installers were very good, however their office failed to give them the specifications for the local codes which are much more restrictive than the national code or the state code. This resulted in the local code inspectors insisting on major changes in the way the electrical wiring was done. This forced the installers to completely undo and redo almost everything that they had done. To their credit, the installers maintained a good attitude and complied with the code inspectors instructions. I am sure that it must have been frustrating to have the code inspectors come three separate times and insist on different changes each time. If their office had provided them with the same engineering plan as they had provided the city inspectors, the installers would have done the work according to local codes the first time. I can't blame the installers. They worked very hard, did a very good job, and maintained a professional attitude throughout the ordeal.