Which condition increases the risk of electrical shock?

Worn insulation significantly increases the risk of electrical shock because it compromises the protective barrier that prevents electrical current from contacting the conductive surfaces or individuals. Insulation is designed to isolate electrical conductors and prevent unintended contact with other conductive materials or surfaces. When insulation is worn, frayed, or damaged, it can allow electricity to leak out, posing a risk when a person comes into contact with the conduit or equipment.

In contrast, dry skin, proper grounding, and low humidity generally do not elevate the risk of shock. Dry skin can actually reduce conductivity, while proper grounding helps divert electrical faults safely to the ground, minimizing the chance of shock. Low humidity can also result in increased resistance in the body's skin, making a person less vulnerable to electric shock.