Plumbing Fixtures and Appliances Flashcards
7 cards from real Journeyman Plumbers Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Plumbing Fixtures and Appliances flashcards as text
Which appliance requires a dedicated GFCI-protected circuit AND a plumbing drain connection?
Answer: Clothes washer
A clothes washer requires both a dedicated electrical circuit (with GFCI in some locations) and a standpipe drain connection for proper installation.
The minimum standpipe height for a clothes washer drain receptor above the trap weir is:
Answer: 24 inches
The IPC requires a standpipe receptor for clothes washers to extend a minimum of 24 inches above the trap weir to prevent backflow.
A water heater temperature and pressure (T&P) relief valve discharge pipe must terminate:
Answer: At a floor drain or within 6 inches of the floor
The T&P relief valve discharge must terminate at a safe point of discharge, typically within 6 inches of the floor or into a floor drain, to prevent scalding.
What is the purpose of the air gap on a dishwasher drain connection?
Answer: To prevent backflow of contaminated water into the dishwasher
The air gap provides a physical break in the drain line to prevent contaminated sink or disposal water from siphoning back into the dishwasher.
A garbage disposal should be connected to the drain system using:
Answer: A 1-1/2 inch trap and drain minimum
Garbage disposals require a minimum 1-1/2 inch trap and drain connection to handle the ground food waste without clogging.
Which type of water heater uses a heat exchanger coil submerged in a storage tank supplied by a boiler?
Answer: Indirect-fired water heater
An indirect-fired water heater uses a boiler to heat water circulated through a heat exchanger coil inside the storage tank rather than burning fuel directly.
When a lavatory is installed in a wheelchair-accessible restroom, the drain trap and supply pipes must be:
Answer: Insulated to protect users from contact burns
ADA-compliant accessible lavatories require insulated or covered drain and supply pipes to prevent burns to users with limited sensation who may contact the pipes.