To determine the qualification tests required for a particular class and classification, which table in W47.1 would be used?

• A. The table listing qualification tests by class and classification
• B. The table of electrical interruptions
• C. The table of chemical composition
• D. The table of groove angles

Answer: (A)

The main idea is to use the table that directly links a welder’s class and classification to the required qualification tests. In W47.1, this table shows exactly which tests a welder must undergo to be qualified for a given class and classification, providing a clear, standardized path for certification. That makes it the right reference for determining what tests are needed.

The other tables cover topics like electrical safety, material composition, or joint geometry, which are not about what qualification tests a welder must complete. They don’t tell you which tests are required for a specific class and classification, so they aren’t the correct source for this question.