Mandrel length should be between which values?

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

Mandrel length is chosen to simulate a small, controlled bend in the cable during bend testing. The length must be long enough to allow the cable to wrap around the mandrel and to observe a stable bend radius without interference from terminations, yet short enough to reflect how bends occur in real field runs. Six to twelve inches provides a practical, standardized size that fits typical test fixtures and field conditions. If the mandrel is too short, the bend concentrates near terminations and may not reveal true bend performance, risking damage or misleading results. If it’s too long, the test becomes cumbersome and may not replicate how the cable behaves in tight-field bends. So, six to twelve inches is the accepted range.