Which of the following types of cable does NOT require additional support if spaced appropriately?

The correct understanding surrounding support requirements for different types of cable helps in maintaining safety and compliance with electrical codes. Non-metallic sheathed cable, Type MC cable, and Type AC cable all have specific guidelines regarding support based on their design and materials.

Non-metallic sheathed cable typically does not require additional support if it is secured and supported at specific intervals, due to its flexible nature and design allowing it to be hung or run along structures. Similarly, Type MC and Type AC cables also have regulations that allow for reasonable spacing without the need for additional physical support as long as they are properly installed according to code and kept within specified distance from supports or structural elements.

However, the assertion that all types of cables require additional support is not accurate, as certain cable types have built-in allowances for spacing that manage their weight and structure without needing supplementary support. Recognizing these distinctions in cable types and their installation requirements is crucial for ensuring electrical safety and compliance with the National Electrical Code (NEC).