For aerial cable, the identification shall be as above, or by means of a ridge located on the exterior of the cable so as to identify it.Fixture wire shall comply with the requirements for grounded conductor identification as specified in 402.8.A single-conductor, sunlight-resistant, outdoor-rated cable used as a grounded conductor in photovoltaic power systems, as permitted by 690.31, shall be identified at the time of installation by distinctive white marking at all terminations.The grounded conductor of a mineral-insulated, metal-sheathed cable (Type MI) shall be identified at the time of installation by distinctive marking at its terminations.Wires that have their outer covering finished to show a white or gray color but have colored tracer threads in the braid identifying the source of manufacture shall be considered as meeting the provisions of this section.Three continuous white or gray stripes along the conductor's entire length on other than green insulation.An insulated grounded conductor of 6 AWG or smaller shall be identified by one of the following means:
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