Nace CP 1 - Color Code for Resistors

CP 1 – Cathodic Protection Tester Course Manual
© NACE International, 2000
07/01/04
Chapter 1 Appendix 2
Color Code for Resistors
A B C D
First Significant Tolerance
Figure. If double Multiplier
wide, resistor
is wire wound.
Second Significant Figure
Values
Band A Band B Band C Band D
Black 0 Black 0 Black 1 Silver ± 10%
Brown 1 Brown 1 Brown 10 Gold ± 5%
Red 2 Red 2 Red 100
Orange 3 Orange 3 Orange 1,000
Yellow 4 Yellow 4 Yellow 10,000
Green 5 Green 5 Green 100,000
Blue 6 Blue 6 Blue 1,000,000
Violet 7 Violet 7
Gray 8 Gray 8 Silver 0.01
White 9 White 9 Gold 0.1
Example
A = Red = 2 C = Orange = 1,000
B = Blue = 6 D = Silver = ± 10%
Resistance Value = 26,000 Ω ± 10%, or between 23,4000 Ω and 28,600 Ω