Red Seal Welding Practice Exam

You should not use a chain when the amount of wear equals what percent for chains less than 1"?

1. 5%

2. 10%

3. 20%

4. 30%

The correct answer is: 5%

Using a chain when the amount of wear equals 5% is not recommended for chains less than 1", as it is already at a high risk for breaking or failing. Choosing options B, C, or D would mean the chain is even more worn and should not be used at all. This is why option A, 5%, is the correct answer. It is the highest percentage at which a chain can still safely be used, but it is not ideal and should be replaced as soon as possible.