Which gauge is associated with DC normal voltage in the color-coding described?

Which gauge is associated with DC normal voltage in the color-coding described?

• A. 10G
• B. 16G
• C. 8G
• D. 4G

Answer: (B)

In this color-coding scheme, the conductor size (gauge) is used to designate the type of DC voltage and its expected current in the circuit. DC normal voltage is assigned to a 16-gauge conductor, which is sized for typical low-current control circuits found in signaling equipment, giving a practical balance between current capacity and ease of installation. Thicker wires (lower-number gauges) would be used for circuits carrying higher current, while thinner wires (higher-number gauges) would apply to other categories, so 16 gauge best fits the DC normal-voltage category.

In this color-coding scheme, the conductor size (gauge) is used to designate the type of DC voltage and its expected current in the circuit. DC normal voltage is assigned to a 16-gauge conductor, which is sized for typical low-current control circuits found in signaling equipment, giving a practical balance between current capacity and ease of installation. Thicker wires (lower-number gauges) would be used for circuits carrying higher current, while thinner wires (higher-number gauges) would apply to other categories, so 16 gauge best fits the DC normal-voltage category.