According to plumbing codes, what is the maximum temperature at which potable water should be delivered to fixtures in a solar water heating system?

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Multiple choice — select the best answer

A140°F (60°C)
B180°F (82°C)
C100°F (38°C)
D120°F (49°C)

✓ Correct answer: D. 120°F (49°C) To prevent scalding, plumbing codes typically specify that water delivered to fixtures should not exceed 120°F (49°C), which is ensured by properly installed mixing valves.

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