Copper is a metal, and metals are good conductors of electricity. Insulators, on the other hand, are materials that do not conduct electricity well. Some examples of insulators include rubber, plastic, and wood.

The ability of a material to conduct electricity is measured by its conductivity. The higher the conductivity, the better the material is at conducting electricity. Copper has a high conductivity, which means that it is a good conductor of electricity.

In contrast, insulators have a low conductivity, which means that they do not conduct electricity well. Rubber, plastic, and wood all have low conductivities, which makes them good insulators.

Therefore, a copper pipe would work better as a conductor than an insulator.