RE Ground rod comes in three different types of various diameter and length and has a cone point for easy driving.
The Plain Rods are used with ground rod clamps for proper electrical contaact.
The soldered type has five turns of #12 soft annedaled copper wire soldered at the upper end.
The Electro -weld type has a 3/8 lnch round bar welded to the upper end portion of the rod.
Length and distance of pigtail from upper end of the rod.v