Most residential electrical services are not designed to accept two sources of power, but they are often utilized for the purpose of connecting PV systems in addition to utility power.
We’ll pick up where we left off with 300.6, Protection against Corrosion and Deterioration. The basic requirement is that equipment must be suitable for the environment in which it is installed.
There are numerous changes in Articles 690 and 705 that apply to photovoltaic (PV) power systems in the 2014 NEC.