A service mast should have a minimum diameter of how many inches?

The minimum diameter of a service mast is specified to ensure adequate structural integrity and support for the electrical conductors and equipment attached to it. A 2-inch diameter mast is sufficient to meet the physical requirements set forth by the National Electrical Code (NEC), providing enough strength and stability to hold the weight of conductors and resist environmental factors such as wind and other forces.

Choosing a mast with a smaller diameter might not adequately support the required load or provide sufficient strength, particularly in adverse weather conditions. Conversely, a larger diameter might offer unnecessary bulk, complicating installation and increasing material costs without providing significant benefits in structural performance. Therefore, the specification of a 2-inch diameter strikes a balance between strength, performance, and practicality in residential and commercial installations.