Hello all, if I have a runway conductor rail for grounding does it need to be identified along the length by color or other means? We have been told by a crane inspector it needs to be labeled that it is equipment ground. I can't seem to find a requirement for that, also I would expect the vendor to provide a green insulating cover if it was required. Thanks, Greco
crane question
- Thread starter greco
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- New Jersey
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- Journeyman Electrician
What code is the inspector citing?
windingelectric
Member
Per crane code the grounding conductor on runway electrification has to be green or labled. I can get the exact code if you would like.
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windingelectric
Member
Question 3: In crane applications, can a separate grounded conductor (neutral) or an equipment grounding conductor be the same color as the other conductors (e.g., can all conductors including the grounded and equipment grounding conductors be red)?
Response: No. As previously stated, 29 CFR 1910.179(g)(1)(i) requires crane installations to comply with 29 CFR 1910. Subpart S. In Subpart S, OSHA has two separate provisions, 29 CFR 1910.304(a)(1)(i) and (a)(ii), which requires that a grounded conductor and an equipment grounding conductor, respectively, must each be identifiable and distinguishable from all other conductors.[4] In general, as noted in the NEC at 200.6 and 250.119, grounded conductors are white or natural gray in color or markings, and equipment grounding conductors are bare (uninsulated) or are green in color or marking. Additionally, in light of your inquiry addressed in Question 2, older installations are not grandfathered from the requirements of CFR 1910.304(a)(1)(i) and (a)(1)(ii).
Thank you for your interest in occupational safety and health. We hope you find this information helpful. OSHA requirements are set by statute, standards, and regulations.
Our interpretation letters explain the requirements, how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected bt changes to OSHA rules. In addition, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at http://www.osha.gov. If you have any questions, please feel free to contact the Office of General Industry Enforcement at (202)693-1850.
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Response: No. As previously stated, 29 CFR 1910.179(g)(1)(i) requires crane installations to comply with 29 CFR 1910. Subpart S. In Subpart S, OSHA has two separate provisions, 29 CFR 1910.304(a)(1)(i) and (a)(ii), which requires that a grounded conductor and an equipment grounding conductor, respectively, must each be identifiable and distinguishable from all other conductors.[4] In general, as noted in the NEC at 200.6 and 250.119, grounded conductors are white or natural gray in color or markings, and equipment grounding conductors are bare (uninsulated) or are green in color or marking. Additionally, in light of your inquiry addressed in Question 2, older installations are not grandfathered from the requirements of CFR 1910.304(a)(1)(i) and (a)(1)(ii).
Thank you for your interest in occupational safety and health. We hope you find this information helpful. OSHA requirements are set by statute, standards, and regulations.
Our interpretation letters explain the requirements, how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected bt changes to OSHA rules. In addition, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at http://www.osha.gov. If you have any questions, please feel free to contact the Office of General Industry Enforcement at (202)693-1850.
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windingelectric
Member
I hope that helps, I had one of my inspectors send me this.
https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=29060
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https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=29060
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Thanks, I have seen that. It is from an interpretation letter from OSHA, I don't think they are clear, the writer does not say where he wants to use the red conductors. Both OSHA and the NEC have a chance to say the runway conductor used as the equipment ground shall be green or identified but I don't see it. Any idea why installers don't have a green cover? We only have a few smaller cranes but they are done the same way by different companies.
Thanks for the help
Greco
Thanks for the help
Greco
windingelectric
Member
When we do installs, we always put up a green bar. You can typically buy any color you want. Common being green, red, and orange.
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