Elevated labeling uses the same color scheme as which system?

• A. CSST
• B. Dual fuel
• C. Indoor gas piping
• D. None

Answer: (B)

Elevated labeling is about making gas lines in overhead or hard-to-see locations quickly and clearly identifiable. The color scheme used for these labels follows the same convention as dual‑fuel installations, so regardless of whether a space contains only gas piping or a combination of gas and electric components, the signals are consistent. This uniform color coding helps technicians recognize gas lines at a glance, reducing the risk of accidental damage or misidentification when working near overhead installations.

CSST and indoor gas piping often have their own labeling nuances, so matching elevated labeling to the dual‑fuel scheme ensures a universal, safety‑driven standard across common mixed‑system environments.