What is the test duration for procedure B?

The test duration for procedure B is correctly identified as 180 minutes. This timeframe is significant as it allows assessors to effectively gauge the participants' understanding and competency in the relevant practical skills and knowledge required for hot water systems.

In practical assessments, having a duration of 180 minutes ensures that students can adequately demonstrate their skills without being rushed. This includes time for preparing the work area, executing the necessary tasks, and addressing any unforeseen issues that may arise during the process. Moreover, it gives the instructor ample opportunity to evaluate the work performed comprehensively and thoroughly.

This duration aligns with standard guidelines in vocational training, where a balance must be struck between sufficient demonstration time and maintaining a rigorous assessment standard. Choosing an appropriate length for testing is crucial in ensuring that the students are well-prepared for real-world scenarios they will encounter in their plumbing careers.