Earth Electrode Testing

Testing an earth electrode to confirm it has a suitably low impedance.

The Video

View this video on Youtube.

Earth Electrodes

Earth electrodes are typically only installed with TT supplies, although they can be used with other supply types. Where an electrode is required, it is essential to confirm the impedance of the electrode is low enough - simply shoving a rod into the ground is not sufficient as local soil conditions will have a dramatic effect on the electrode impedance.

Two methods of testing are covered in this video.