and also please note some useful web site in this field !
I migth add ground fault detectors and lightingrods
Protection on my system consists of switches and fuses, and a continuous ground connection between each module and an earth ground. One fused switch isolates the modules from the rest of the system. Another isolates the system from the public utility, A fuse protects the AC circuit feeding the control unit. Another protects internal components. And,of course, there is the building service entrance switch and fuses.
