How can I find out if my 1/2 inch /8' ground rods are acceptable?The inspector here said I cant use them.Is there a web site or a book were they can be cross refrenced.I can show him they are ERITECH brand but there web site was no help.
The only time I have heard reasoning for the different diameters of ground rod was when the desired driven depth required greater force to be applied when driving the rod or in rocky soil. The thicker rod would have less of a chance of bending. There is no "electrical" reason for diffrent diameters.
The main problem with many inspectors - those present excluded - that they are like the pharasees reading the Book. The understand not but can follow the letter.
A ground rod is not required to be listed or labeled. The AHJ may accept anything he wants per 110.3(A). 110.3(B) simply says that if it is listed then it must be installed and used in accordance with any instructions included in the listing and labeling.
And before anyone throws 110.2 out read the definition of approved.