For proper installation, the entrance head must be mounted at what height in relation to the service drop?

The correct answer emphasizes the importance of safety and functionality in electrical installations. The entrance head is a critical component of the electrical service drop; it needs to be mounted higher than the service drop to prevent potential hazards. By positioning the entrance head higher, it minimizes the risk of physical damage to the wiring and reduces the chance of water intrusion, which can lead to electrical shorts or other issues.

Furthermore, mounting the entrance head higher allows for adequate clearance from vehicles, landscaping, or any other potential interference, ensuring that the electrical service remains accessible and safe. This height requirement is part of the National Electrical Code (NEC) standards aimed at promoting safe electrical practices and ensuring that installations adhere to established safety guidelines.