* Poor electrical conductivity: Nonmetals are generally poor conductors of electricity. This means they resist the flow of electrons, making them unsuitable for carrying electrical currents.

* Brittleness: Many nonmetals are brittle, meaning they are easily broken or shattered. This makes them impractical for use in wires that need to be flexible and durable.

In contrast, metals are excellent conductors of electricity and are generally more ductile (able to be drawn into wires) than nonmetals. This makes them the preferred material for electrical wiring.