Labels for medical gas must be a max distance of?

• A. 20 feet apart
• B. 10 feet apart
• C. 30 feet apart
• D. 40 feet apart

Answer: (A)

Labeling for medical gas should be placed so it’s easily seen as you move through a space, ensuring you encounter a readable gas identifier within a short distance. The limit of 20 feet between labels keeps any corridor, room, or outlet area within sight of the gas type, reducing the risk of confusing one gas for another.

If labels were closer together, you’d have more clutter and maintenance overhead without adding meaningful safety benefit. If labels were farther apart, you could end up with stretches where the gas type isn’t immediately identifiable, increasing the chance of errors in connection or use. So, spacing labels at most every 20 feet provides a practical balance between visibility and practicality.