CSLB C-36 Plumbing ContractorRough-in PlumbingHard

A plumbing inspector is reviewing a new residential gas piping system. The inspector notes that a flexible gas appliance connector, 3 feet in length, is being used to connect a range. The connector is partially concealed within a cabinet wall and extends through a floor. Is this installation compliant with the California Plumbing Code?

  1. AYes, flexible connectors up to 6 feet are permitted if adequately protected.
  2. BYes, as long as the concealed portion is accessible for inspection.
  3. CNo, flexible gas connectors are prohibited from being concealed within walls, floors, or partitions.
  4. DNo, flexible connectors are only permitted for movable appliances and cannot penetrate structural elements.
Show answer & explanation

Correct answer: C. No, flexible gas connectors are prohibited from being concealed within walls, floors, or partitions.

According to the California Plumbing Code (CPC), flexible gas appliance connectors are specifically prohibited from being concealed within or extending through any wall, floor, partition, or other structural element. They must be fully exposed for inspection and replacement.

Why the other options are wrong

  • A. While length limits exist, the concealment is the primary violation here.
  • B. Concealment, even if accessible, is generally prohibited for flexible gas connectors.
  • D. Flexible connectors are permitted for movable appliances, but the prohibition on concealment is the key issue here, not penetration of 'structural elements' per se, but rather concealment within them.

Flexible Gas Connector Concealment

Rules regarding whether flexible gas appliance connectors can be hidden within building structures.

  • Must be fully exposed for safety and inspection.
  • Prevents undetected damage or leaks.
  • Prohibited from passing through walls, floors, or partitions.

Memory trick: Flexible gas lines: see them, don't conceal them, for safety's appeal.

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