What is the maximum riser length allowed for a service drop in residential installations?

In residential installations, the maximum riser length allowed for a service drop is 10 feet. This specification ensures that the electrical service drop maintains a safe and reliable connection to the weatherhead or service entrance. The riser must be sufficiently supported to prevent excessive strain on the conductors and associated hardware.

A riser length of 10 feet permits proper clearance from the ground and allows enough vertical descent to facilitate the connection to the service panel while accommodating environmental factors that might affect the cables. Establishing this maximum length is crucial for safety, as it helps mitigate issues such as damage to the wiring or excessive tension on the connections. Understanding these limits helps ensure compliance with local codes and promotes safe electrical practices in residential installations.