Red Seal Plumbing Practice Exam

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Elevate your plumbing career with our Red Seal Plumbing Exam quiz. Crafted to test and enhance your knowledge, ensuring you're fully prepped for success. Dive in now!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What size drain is typically installed for a residential clothes washer?

1.5 inches
2 inches
2.5 inches
3 inches

The correct answer is: 2 inches

A 1.5 inches is too small for a residential clothes washer because it may cause clogging and slow draining. C: 2.5 inches is larger than necessary and can lead to wasted water and slower drainage times. D: 3 inches is unnecessary and may result in higher installation costs for the homeowner. Therefore, the most appropriate size for a residential clothes washer drain is 2 inches. This size provides efficient drainage without overspending on excess pipe size. Additionally, it is a common standard size used in most residential buildings.