When working on live electrical equipment and equipment, the risk of arcing hazards must be assessed. Arcing arcs are usually caused by a short circuit between the electrical conductors.
In this case, the electrical energy discharges in a very short time.
During this time, the electrician is subjected to the action of the arc.

On the basis of the latest findings it has been shown that besides the influences from the plasma cloud also the heat radiation, which penetrates through the face shield, leads to burns of the skin.
The new test principles GS-ET 29 consider this with two additional requirements, which supplement the previous requirements of EN 166 and thus ensure conformity with the PSA directive.