What is the maximum allowed spacing for fastening exposed cable?

The maximum allowed spacing for fastening exposed cable is 30 inches or less. This standard is established to ensure that the exposed cables remain secure and do not sag or come loose over time, which could potentially lead to damage or safety hazards. Proper fastening helps maintain the integrity of the cable and the lightning protection system as a whole, as it minimizes the risk of mechanical strain or environmental impacts causing issues with the installation. By enforcing a maximum spacing of 30 inches, compliance with industry standards and ensuring the effectiveness of the lightning protection system is achieved.