Which URD component is used to isolate, test, and ground?

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Multiple Choice

Which URD component is used to isolate, test, and ground?

In URD work, you need a safe, accessible point to isolate a section of the circuit, run testing probes, and establish a ground reference for worker safety. A portable feed-through bushing is designed for that role. It lets a conductor pass through an enclosure with insulation, while providing a removable plug or test connection. By taking out the plug, you electrically isolate the section; you can attach test leads to verify de-energization, and you can connect a temporary ground to the assembly to ensure the circuit is grounded during testing. The portable aspect means you can move this testing point as needed across different locations, without committing to a fixed, non-portable device. The other options don’t serve all three functions in a single, portable access point. A molded underground splice joins conductors rather than providing an isolated, testable point. A grounding elbow focuses on establishing a ground at the elbow connection, not on creating a portable test point. A disconnect switch can isolate a circuit, but it isn’t typically used as a portable, test-point grounding device in URD maintenance.

In URD work, you need a safe, accessible point to isolate a section of the circuit, run testing probes, and establish a ground reference for worker safety. A portable feed-through bushing is designed for that role. It lets a conductor pass through an enclosure with insulation, while providing a removable plug or test connection. By taking out the plug, you electrically isolate the section; you can attach test leads to verify de-energization, and you can connect a temporary ground to the assembly to ensure the circuit is grounded during testing. The portable aspect means you can move this testing point as needed across different locations, without committing to a fixed, non-portable device.

The other options don’t serve all three functions in a single, portable access point. A molded underground splice joins conductors rather than providing an isolated, testable point. A grounding elbow focuses on establishing a ground at the elbow connection, not on creating a portable test point. A disconnect switch can isolate a circuit, but it isn’t typically used as a portable, test-point grounding device in URD maintenance.

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