Does anyone have any practical experience in installing station class arresters for protection of the LV side of a power transformer? I'm curious as to the conductor size/type used for the primary connection...need it be bare or can it be insulated? What about size...I figure a 4/0 stranded Cu ought to be plenty as my application is on a 4 kV system where the source of energy is a hydroelectric generating unit (i.e. the energy source is not the grid nor lightning).
Any insight would be appreciated.
E