NSW Plumbing Licence Practice Questions - NSW Plumbing & Drainage Tradesperson Certificate (Plumbing Trade Theory) Exam

What does the nominal size designation DN15 most commonly refer to in domestic water service pipework?

A pipe with a 15 mm nominal bore (approx. 1/2 inch) A pipe with a 15 mm wall thickness A pipe with a 15 metre maximum run A 15 kPa pressure rating

Correct Answer:

A pipe with a 15 mm nominal bore (approx. 1/2 inch)

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