What is the consequence of running different voltages in the same conduit without adequate insulation?

Running different voltages in the same conduit without adequate insulation can lead to potential electrical fires due to the risk of arcing and short circuits. When conductors of differing voltages are placed in close proximity without proper insulation, the electric field between them can exceed the dielectric strength of the insulation material. This can cause the insulation to break down, leading to a short circuit, which generates heat and, in extreme cases, could ignite nearby combustible materials, posing a significant fire hazard.

The presence of multiple voltages in the same conduit increases the chances of unintentional current paths, which could direct current to areas where it shouldn't be, further escalating the risk of fire. Hence, the safety regulations require careful separation of circuits to prevent such dangerous situations and ensure the reliable functioning of electrical systems.