Does the NEC specify a particular color arrangement for three phase systems?
Issue:
Wiring colors inside our panelboards. Are they color coded per NEC code?
Product Line:
Panelboards
Environment:
Products sold and used in the United States
Cause:
Installation / Setup
Resolution:
No, but electricians often use the following color system for power and lighting conductor identification:
120/240V, single-phase?black, red, and white
120/208V, three-phase?black, red, blue, and white
120/240V, three-phase?black, orange, blue, and white
277/480V, three-phase?brown, orange, yellow, and gray; or, brown, purple, yellow, and gray.
Courtesy Mike Holt Enterprises, Inc.
Wiring colors inside our panelboards. Are they color coded per NEC code?
Product Line:
Panelboards
Environment:
Products sold and used in the United States
Cause:
Installation / Setup
Resolution:
No, but electricians often use the following color system for power and lighting conductor identification:
120/240V, single-phase?black, red, and white
120/208V, three-phase?black, red, blue, and white
120/240V, three-phase?black, orange, blue, and white
277/480V, three-phase?brown, orange, yellow, and gray; or, brown, purple, yellow, and gray.
Courtesy Mike Holt Enterprises, Inc.
Released for: Schneider Electric Canada
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