What is a common cause for electrical shorts?

A common cause for electrical shorts is indeed insulation wear and tear. Over time, the insulation that protects electrical wires can degrade due to various factors such as age, heat, or abrasion. When this insulation becomes worn or damaged, it may no longer effectively prevent the wires from coming into contact with each other or with conductive materials. Such contact can create a short circuit, which can lead to equipment damage, fires, or other hazards.

High voltage circuits are not exclusively responsible for shorts; shorts can occur in any type of circuit when insulation fails. Low moisture environments typically do not facilitate shorts; in fact, moisture can lead to corrosion and further deterioration of insulation. While overuse of light fixtures can lead to overheating and potential problems, it is not a direct cause of electrical shorts in the same way that compromised insulation is.