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| this is what code says: # O& F- p5 y! L- v5 {$ M4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
 1 }: D( P7 \3 K7 w! }copper or aluminum/ v( }/ v* y- S2 z! o$ M6 D
 (1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
 * p. a/ W/ x6 J7 P2 Q# f; |$ x3 uNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
 8 W+ @1 n$ y0 ~6 a# B/ bsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
 " A# M; Y, l; q8 Ialong the entire length of the conductor.
 . H" D5 J' c# f" f) ?4 V, Z% ^(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure7 R8 v3 v1 \9 O0 X, T! ?; D
 and the identified circuit conductor of one system is coloured by a white or grey covering, each identified1 ^5 ]7 Q9 y5 J2 @
 circuit conductor of the other system, if present, shall be provided with a specific identification, and the+ z3 W. K. ?/ n) b" E# A
 identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not' D" m8 w* D2 X  ~, a7 V. L
 green) running along the insulation.
 5 F( V* d9 w/ E) Z* t(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of) Y/ O8 I+ [- M8 I
 an identified conductor; however, in the case of those flexible cords where the identified conductor is
 $ L* p8 t$ f/ C* |% I- xidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.8 N2 d  c3 W, ]# Z1 W1 t
 (4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
 4 u/ M. ?% s9 ~0 fas the identified conductor by painting or other suitable means at every point where the separate# E6 J7 R# c% ?3 X2 J+ z/ l3 r7 d1 x
 conductors have been rendered accessible and visible by removal of the outer covering of the cable, and. w. k/ m9 z9 X) O0 j% K2 L
 the painting or other suitable means of marking the identified conductor shall not be permitted to render
 ' l1 ~* K7 D0 N, o% P* fillegible the manufacturer’s numbering of the conductor.
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