Practice Test Geeks(PC) Plumber Certification Practice Test
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Installation Techniques Flashcards

7 cards from real PC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Installation Techniques flashcards as text

  1. When connecting a gas dryer to a flexible gas connector, what is the maximum allowable length of the connector?

    Answer: 6 feet

    Flexible gas appliance connectors are limited to a maximum length of 6 feet by ANSI Z21.24 and most fuel gas codes to limit risk in case of damage.

  2. A 3-inch sanitary tee is being installed in a horizontal drain line. Which direction must the branch outlet face?

    Answer: Upward, toward the ceiling

    A sanitary tee installed in a horizontal drain line must have its branch facing upward (vertical) to serve as a vent connection; it cannot be used for a horizontal drain branch.

  3. What type of flux is recommended for use with lead-free solder on potable water copper pipe?

    Answer: Water-soluble lead-free flux

    Water-soluble, lead-free flux is required for potable water copper pipe connections to comply with the Safe Drinking Water Act and avoid contaminating the water supply.

  4. When installing a water heater in a garage, the ignition source of the water heater must be elevated a minimum of how many inches above the floor?

    Answer: 18 inches

    Water heater ignition sources in garages must be elevated at least 18 inches above the floor to keep them above potential accumulations of heavier-than-air flammable vapors.

  5. Which tool is used to expand PEX-A tubing ends before inserting a fitting?

    Answer: PEX expansion tool (expander)

    PEX-A uses the expansion (ProPEX) method where a special expansion tool expands the tube and fitting ring before the tube contracts back to grip the fitting.

  6. What is the minimum distance a vent pipe must extend above a roof surface that receives no snow load?

    Answer: 12 inches

    Most plumbing codes require vent pipes to extend at least 6 inches above the roof surface to prevent rain and debris from entering the vent, though 12 inches is the common standard requirement.

  7. When soldering copper fittings, at what point should solder be applied relative to the torch flame?

    Answer: Apply solder to the opposite side of the joint from the flame

    Solder should be applied to the opposite side of the joint from the flame; when the fitting is hot enough, capillary action draws the solder completely around the joint.