What other methods are acceptable for supporting service-entrance conductors using a Type SE cable method?

The acceptance of both vertical and horizontal supports for service-entrance conductors using Type SE cable is rooted in the flexibility provided by the National Electrical Code (NEC). Type SE cables are designed to be versatile in their installation, which allows for various support methods as long as safety standards and installation practices are met.

Utilizing a combination of vertical and horizontal supports ensures that the cables are adequately secured, minimizing the risk of damage or strain on the conductors. This is particularly important as it helps maintain the integrity of the electrical system and enhances the overall safety of the installation. The NEC recognizes different installation scenarios, which is why it permits both orientation types.

Moreover, the code also emphasizes the importance of adhering to the manufacturer's installation instructions and ensuring that supports are adequately spaced and securely fastened. This approach is essential for safeguarding against environmental factors and physical wear that could compromise the electrical performance.

In contrast to the other options, which limit support types or specify installations too narrowly, acknowledging both vertical and horizontal support methods aligns with the NEC's objective of ensuring safe and effective electrical installations.