What should be the maximum distance a fastening device can be from the back or end of a device box?

The maximum distance a fastening device can be from the back or end of a device box is 6 mm. This standard ensures that the fastening device, which is often a screw or other type of connector, is adequately close to the box for secure attachment. Adhering to this measurement is critical for maintaining the integrity and safety of electrical installations. It helps to prevent issues such as improper alignment, which could lead to loose connections or faulty installations that might pose safety hazards.

The specification also aids in standardizing installation practices, thus promoting safer and more reliable electrical work. Implementing such guidelines contributes to the overall safety of electrical systems and compliance with code requirements.