A plumber is installing a new water supply line in an existing home. The line must be installed in a concealed location. Which of the following materials is the most suitable for this application?

ICC P1 exam practice question · General Requirements

A plumber is installing a new water supply line in an existing home. The line must be installed in a concealed location. Which of the following materials is the most suitable for this application?

ACopper
BPVC
PEX
DGalvanized steel

Exam tip

PEX is often preferred for concealed installations due to its ease of installation and durability.

Why C is correct

According to Section P2601.1 of the 2024 International Residential Code, PEX (cross-linked polyethylene) is the most suitable material for concealed water supply lines due to its flexibility and resistance to corrosion.

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A plumber is installing a new water supply line in an existing home. The line must be installed in a concealed location. Which of the following materials is the most suitable for this application?

A plumber is installing a new water supply line in an existing home. The line must be installed in a concealed location. Which of the following materials is the most suitable for this application?

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