With electrical lifetimes exceeding 40 years, photovoltaic
(PV) systems must be installed using the best available
workmanship to ensure public safety over the life of the
system. While the 700-plus pages of the National Electrical
Code establish numerous requirements for electrical and
mechanical procedures, the Code does not describe how
many of these operations should be performed and how the
final installation should look. This article will illustrate some
areas that need attention before the workmanship of a PV
installation is inspected. Of course, the local authority having
jurisdiction (AHJ) has final approval of the workmanship.