At what maximum interval must nonmetallic surface extensions be secured?

Nonmetallic surface extensions must be secured at a maximum interval of 8 inches. This requirement is essential for ensuring safety and functionality in electrical installations. By securing the nonmetallic surface extensions at this interval, it prevents drooping or movement that could lead to damage or excessive strain on the wiring.

This standard aligns with safety codes and best practices in the electrical industry, as it helps maintain the integrity of the wiring installation. Proper securing minimizes risks associated with electrical hazards, such as shorts or wear that can occur when cables are not properly supported. Adhering to this guideline is critical for compliance with regulatory standards and to ensure the reliability of the electrical system.