3 Phase Motor Wiring Color Code. Although the national electric code does not specify specific conductor colors for three phase current it is common to use black red and blue wires to identify lines l1 l2 and l3 respectively. Refer to the motor manufacturer s data on the motor for wiring diagrams on standard frame ex e ex d etc.
Neutral that is represented as n. Ground ground wiring should be green or green with a yellow stripe. Although the national electric code does not specify specific conductor colors for three phase current it is common to use black red and blue wires to identify lines l1 l2 and l3 respectively.
Brown phase 1.
Green with yellow stripe ground. In the united states for low voltage motors below 600v you can expect either 230v or 460v. A three phase motor must be wired based on the diagram on the faceplate. Phase 2 phase 2 wiring should be orange.
