Plumber Red Seal · Question
A plumber is preparing to join two lengths of 15 mm Type L copper tubing for a potable water line in a residential renovation. They have cleaned the tubing ends and applied flux. What is the most appropriate solder to use for this application according to Canadian plumbing codes?
Canadian plumbing codes mandate the use of lead-free solder for potable water systems. 95/5 tin-antimony solder is a common lead-free option for copper piping.
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Question: A plumber is preparing to join two lengths of 15 mm Type L copper tubing for a potable water line in a residential renovation. They have cleaned the tubing ends and applied flux. What is the most appropriate solder to use for this application according to Canadian plumbing codes?
Answer options: ✅ 95/5 tin-antimony solder
- 50/50 tin-lead solder
- Lead-free silver solder
- Acid core solder
Correct answer: 95/5 tin-antimony solder
Explanation: Canadian plumbing codes mandate the use of lead-free solder for potable water systems. 95/5 tin-antimony solder is a common lead-free option for copper piping. 50/50 tin-lead solder is prohibited for potable water, and acid core solder should not be used on potable water lines as it can cause corrosion.
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