What is commonly used as a conductor covering?

Crosslinked polyethylene (often abbreviated as PEX) is a popular choice for conductor covering due to its excellent insulation properties and resilience. It is a thermoset material that, once processed, maintains its shape and integrity under temperature variations and stress, making it ideal for various applications where durability and electrical insulation are key.

PEX is particularly valued in environments that require protection from moisture, chemicals, and physical abrasion. Its crosslinked structure enhances its thermal resistance and mechanical properties, which makes it more reliable than other materials when exposed to extreme conditions. This versatility is why it's widely used in electrical wiring applications, as it effectively prevents electrical leakage and enhances safety in installations.

In contrast, while other materials like polyvinyl chloride and rubber can also serve as conductor coverings, they may not offer the same level of thermal performance or durability as crosslinked polyethylene. Fiberglass, while an excellent material for reinforcing and insulating in certain structural applications, isn't typically used as a primary covering for electrical conductors. Therefore, crosslinked polyethylene stands out as the most effective and commonly used option for conductor covering in the context of electrical applications.