DC Plumber Practice Questions - District Of Columbia Journeyman Plumber License Exam

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Per the IPC as adopted in DC, what is the minimum size gas supply line for a residential water heater rated at 40,000 BTU/hr with a 20-foot run?

3/8 inch 1/2 inch 3/4 inch 1 inch

Correct Answer:

1/2 inch

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