Which color indicators on a relay represent voltage type?

Which color indicators on a relay represent voltage type?

• A. Green means DC (normal voltage 16G wire); Red means AC (higher voltage 10G wire)
• B. Red means DC (normal voltage); Green means AC (high voltage)
• C. Red means AC (higher voltage 10G wire); Green means DC (normal voltage 16G wire)
• D. Red and Green indicate polarity only

Answer: (C)

Relays use color clues to quickly show what kind of power is driving the circuit. In this system, red is used for alternating current on a higher‑voltage path (wired with heavier 10‑gauge conductors), while green is used for direct current on the normal‑voltage path (wired with lighter 16‑gauge conductors). This separation helps technicians identify the voltage type at a glance during inspection or work. So red indicating AC and green indicating DC is the correct and consistent mapping. Using a different color scheme would mislabel the voltage type and could lead to unsafe or incorrect handling.

Relays use color clues to quickly show what kind of power is driving the circuit. In this system, red is used for alternating current on a higher‑voltage path (wired with heavier 10‑gauge conductors), while green is used for direct current on the normal‑voltage path (wired with lighter 16‑gauge conductors). This separation helps technicians identify the voltage type at a glance during inspection or work. So red indicating AC and green indicating DC is the correct and consistent mapping. Using a different color scheme would mislabel the voltage type and could lead to unsafe or incorrect handling.