Customisable Back filled Magnesium Anode Bag 1.7V INCL 32 Ft Of 8 AWG XLPE/PVC Cable

The back filled (pre-packed) anode used for cathodic protection is not in direct contact with the soil in which it is buried. The reason is that the soil contains many minerals and other chemicals that might affect the anode and therefore decrease its effectiveness. One of the harmful effects that might be caused by minerals is the buildup of high-resistance films on the surface of the anode, thus hampering its conductivity.

In addition, we want the anode to be uniformly consumed and give its maximum efficiency. That’s why special backfills are used depending on the particular environment, application and the anode’s material. The prime purpose of using the backfill is to reduce electrical resistivity. This provides a lower anode-to-earth resistance and greater current outputs in cases where the surrounding soil is of high resistivity.