The color specified for the breaker label text for the alarm system is which color?

• A. Red
• B. Black
• C. Blue
• D. White

Answer: (B)

The key idea is legibility and quick readability of the breaker label for the alarm system. Black text on a light background offers the strongest contrast, so the circuit information is easy to read at a glance, from a distance, or in low-light situations. This makes maintenance and emergency identification faster and reduces the chance of misreading a label. Using red or blue text can imply warnings or other meanings and doesn’t provide the same universal readability on a light label. White text on a light background also often lacks enough contrast, making it harder to read. So black text on a light label is the standard choice for clear, durable readability.