What material should protective clothing for electric arc welding be made of?

Protective clothing for electric arc welding should be made of leather because it is highly durable and offers excellent resistance to heat and sparks generated during the welding process. Leather has inherent properties that allow it to withstand high temperatures without igniting or melting, which is crucial when working near an electric arc. It also provides good protection against burns and is less likely to create a hazard in case of contact with hot metal.

Using leather clothing helps ensure that welders have appropriate protection against potential injuries associated with electric arcs, such as flames and flying molten metal. While materials like cotton and wool offer some fire resistance, they are not as effective as leather in extreme conditions. Polyester can melt under high temperatures, which can lead to severe burns, making it unsuitable for this type of work. Therefore, leather is the recommended choice for protective clothing in electric arc welding.