What category rating would be used on a meter for service drop?

The correct category rating for a meter used for service drop is classified as Category 4. This classification is important because it reflects the level of electrical environment and potential hazards associated with the service drop area, which includes the overhead or underground power lines that lead to a property.

Category 4 indicates that the equipment is directly connected to the utility supply, and as such, it is exposed to high energy levels and significant surge potential. This requires tools and meters designed to handle extreme conditions and provide a higher level of insulation and safety features to protect the user.

In contrast, lower category ratings, such as Category 1, Category 2, and Category 3, are designed for different applications, typically involving less dangerous environments with lower voltage levels and less exposure to overvoltage transients. Category 1 is suitable for very low-voltage circuits, Category 2 is meant for appliances or portable equipment, and Category 3 is for distribution circuits. Thus, using a meter rated for a lower category in a service drop scenario could pose serious safety risks.