C cpergiel Member Mar 9, 2005 #1 History of color codes We work with both AC and DC electrical equipment. In DC circuits we typically use red for the hot lead (+) and black for ground (-). In AC circuits, white is neutral and black is hot. Where did these color codes originate?
History of color codes We work with both AC and DC electrical equipment. In DC circuits we typically use red for the hot lead (+) and black for ground (-). In AC circuits, white is neutral and black is hot. Where did these color codes originate?
