What should be done to prevent tampering with an accessible automatic overcurrent device protecting service conductors?

Sealing or locking the automatic overcurrent device is the most effective method to prevent tampering with it. This approach ensures that only authorized personnel can access the device, thereby providing a layer of security that deters unauthorized adjustments or alterations. Such protective measures help maintain the integrity of the overcurrent device, ensuring that it functions correctly in the event of an overcurrent situation, thereby safeguarding the electrical system and minimizing risks associated with tampering.

While regular inspection is important for the maintenance of the device, it does not actively prevent tampering. Replacing the device frequently does not address the issue of tampering either, and simply positioning it out of reach can be impractical or insufficient, as it might still be vulnerable to access in some situations. The strategic use of seals or locks directly addresses the potential for unauthorized interference, making it the most reliable choice for ensuring that the overcurrent device remains protected and operates as intended.