What is NOT required for underground raceways and cable assemblies entering a handhole enclosure?

In the context of underground raceways and cable assemblies entering a handhole enclosure, the requirement for mechanical connection to the enclosure is not specified. While it's essential for these cable assemblies to be properly secured and installed to prevent physical damage and maintain the integrity of connections, they do not necessarily need to be mechanically connected to the handhole enclosure itself.

In contrast, painting raceways is typically not a requirement, although marking for identification purposes is crucial to ensure that the purpose and contents of the enclosures are easily understandable. Additionally, insulation is essential for safety and performance, protecting against shorts and ensuring that components can operate without unintended electrical contact. Thus, the prerequisite for mechanical connection is not applicable, making it an appropriate answer to the question.