Nestor_R175
Member
- Location
- Florida
- Occupation
- Electrical Superintendent
200.6 states:
200.6 Means of Identifying Grounded Conductors
(A). Grounded (neutral) conductors 6 AWG and smaller must be identified by one of the following means [200.6(A)]:
1) By a continuous white outer finish.
2) By a continuous gray outer finish.
3) By three continuous white stripes along its entire length on other than green insulation.
4) 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 are considered to meet the provisions of this section. The use of white tape, paint, or other methods of identification isn't permitted for grounded conductors 6 AWG or smaller.
6) A single-conductor, sunlight-resistant, outdoor-rated cable used as the grounded conductor in photovoltaic power systems as permitted by 690.31(B) can be identified by distinctive white marking at all terminations.
Grounded (neutral) conductors 4 AWG or larger must be identified by one of the following means [200.6(B)]:
1) A continuous white outer finish along its entire length.
2) A continuous gray outer finish along its entire length.
3) Three continuous white stripes along its length.
4) White or gray tape or markings at the terminations.
3 years ago I was part of constructing a Solar site that had black and white DC Output Feeder cable. In that system we received harness cable as well and on the black cable we had inline fuses rated at 20a and the white served as the negative cable. Since 200.6 (B) states for sizes 4 AWG or Larger (1) A continuous white outer finish serves as the Identification of the Grounded Conductor, why was the Black cable served as the Positive and the white as the negative? On the site that I'm on now we have stated on a detail that,
DC NEGATIVE GROUNDED CONDUCTORS SHALL BE BLACK. EQUIPMENT GROUNDING CONDUCTORS SHALL BE BARE,
COLORED GREEN, OR MARKED GREEN. So my question is what is the real requirement for 2000v PV Underground Feeder cable if we have black and white as our colors?
200.6 Means of Identifying Grounded Conductors
(A). Grounded (neutral) conductors 6 AWG and smaller must be identified by one of the following means [200.6(A)]:
1) By a continuous white outer finish.
2) By a continuous gray outer finish.
3) By three continuous white stripes along its entire length on other than green insulation.
4) 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 are considered to meet the provisions of this section. The use of white tape, paint, or other methods of identification isn't permitted for grounded conductors 6 AWG or smaller.
6) A single-conductor, sunlight-resistant, outdoor-rated cable used as the grounded conductor in photovoltaic power systems as permitted by 690.31(B) can be identified by distinctive white marking at all terminations.
Grounded (neutral) conductors 4 AWG or larger must be identified by one of the following means [200.6(B)]:
1) A continuous white outer finish along its entire length.
2) A continuous gray outer finish along its entire length.
3) Three continuous white stripes along its length.
4) White or gray tape or markings at the terminations.
3 years ago I was part of constructing a Solar site that had black and white DC Output Feeder cable. In that system we received harness cable as well and on the black cable we had inline fuses rated at 20a and the white served as the negative cable. Since 200.6 (B) states for sizes 4 AWG or Larger (1) A continuous white outer finish serves as the Identification of the Grounded Conductor, why was the Black cable served as the Positive and the white as the negative? On the site that I'm on now we have stated on a detail that,
DC NEGATIVE GROUNDED CONDUCTORS SHALL BE BLACK. EQUIPMENT GROUNDING CONDUCTORS SHALL BE BARE,
COLORED GREEN, OR MARKED GREEN. So my question is what is the real requirement for 2000v PV Underground Feeder cable if we have black and white as our colors?