What type of support is required for service-entrance cables?

Service-entrance cables require a series of straps at a maximum of 30-inch intervals for proper support and stability. This requirement ensures that the cables are secured adequately to prevent sagging and potential damage that could occur if the cables are left unsupported. The 30-inch interval is specified in the National Electrical Code (NEC) guidelines, which aim to ensure safety and longevity of electrical installations. Straps provide a firm hold on the cables, allowing them to remain orderly and protected from environmental factors and mechanical stress. Properly supporting service-entrance cables not only complies with safety standards but also promotes efficient and safe electrical service within any installation.