Wouldn't we have to wait for 250.52(A)(5)(b) to get changed?
250.52(A)(5)(b)Electrodes of rods of iron or steel shall be at least 15.87 mm (5/8 in.) in diameter. Stainless steel rods less than 16 mm (5/8 in.) in diameter, nonferrous rods, or their equivalent shall be listed and shall not be less than 13 mm (1/2 in.) in diameter.
In my mind a galvanized steel rod is not equivalent to Stainless steel or nonferrous rods.
Bob
