Send to a Friend View / Add Comments  
Significant Proposals for 2005 NEC Part VIII

As Reviewed by Mike Holt

The following text is a quick summary of the proposed changes for the 2005 NEC. This document is a work in progress and many will be changed by the Code panel over the next few months. Some of these you might find important to your work and you might want to follow their progress with me. Therefore, each week I will email you a few of these changes.

Each proposed change has a Report on Proposal (ROP) number, like 1-25. This number reflects the Proposal Number and all action on this proposal can be viewed in the following PDF document NEC Part2.

As always, I am looking to improve our products, so if you feel you have anything to contribute, please let me know at Mike@MikeHolt.com.

Article 344 Rigid Metal Conduit: Type RMC

8-38, 8-39
344.22 Number of Conductors.
Revised text permits cables to be installed within RMC.

8-30
344.30 Securing and Supporting.
(B) Supports. Text added to make the distinction between "support" and "securely fastened".

Article 348 Flexible Metal Conduit: Type FMC

8-38, 8-39
348.22 Number of Conductors.
Revised text permits cables to be installed within FMC.

8-43
348.30 Securing and Supporting.
(A) Securely Fastened. Revisions to Exception No. 2 relax the requirements for securing FMC at terminations where flexibility is required.

Author's Comment: There was little point in installing FMC at a termination point where flexibility is required, only to have to secure it in place.

8-45
348.30 Securing and Supporting.
(A) Securely Fastened. Revision to Exception No. 4 clarifies the requirements for the "6 ft whip without support rule" for luminaire or other electrical equipment within an accessible ceiling rule.

8-51
348.60 Grounding and Bonding.
Clarify when FMC can be used as an equipment grounding (bonding) conductor.

Article 350 Liquidtight Flexible Metal Conduit: Type LFMC

8-59, 8-60
350.22 Number of Conductors or Cables.
(A) Trade Sizes 1/2 through 4. Revised text permits cables to be installed within IMC.

8-64
350.30 Securing and Supporting.
(A) Securely Fastened. Revised exception No. 4 to clarify the "6 ft whip rule" for luminaire or other electrical equipment within an accessible ceiling rule.

8-71
350.60 Grounding and Bonding.
Clarify when LFMC can be used as an equipment grounding (bonding) conductor.


Article 352 Rigid Nonmetallic Conduit: Type RNC

8-83 and 8-84
352.22 Number of Conductors.
Revised text permits cables to be installed within RNC.


Article 353 High Density Polyethylene Conduit: Type HDPE Conduit

8-96
High Density Polyethylene Conduit: Type HDPE Conduit
New article recognize the use of High Density Polyethylene (HDPE) Conduit, which has previously been treated as Rigid Nonmetallic Conduit.

Author's Comment: HDPE conduit can be used in continuous lengths in almost all outside underground locations. However, this product has different properties than RNC, therefore it was felt that it is appropriate to add this new Article.


Article 356 Liquidtight Flexible Nonmetallic Conduit: Type LFNC

356.22 Number of Conductors.
Revised text permits cables to be installed within LFNC.

8-112
356.30 Securing and Supporting.
(1) Securely Fastened. Clarify when LFNC fittings can be used to support LFNC-B conduit, and what the support requirements are for lengths longer than 6 ft.

8-114
356.30 Securing and Supporting
(4) "6 ft Wipe Rule." New rule clarifies the "6 ft whip rule" for luminaire or other electrical equipment within an accessible ceiling rule.

8-116
356.42 Couplings and Connectors.
New text clarifies the type of fittings to be use with LFNC, and when PVC solvent cement fittings are not permitted.

8-117
356.42 Couplings and Connectors.
Add clarification on what type of LFNC fittings can be direct burial or encased in concrete


Article 358 Electrical Metallic Tubing: Type EMT

9-125 and 9-126
358.22 Number of Conductors.
Revised text permits cables to be installed within EMT.


Article 362 Electrical Nonmetallic Tubing: Type ENT

362.22 Number of Conductors.
Revised text permits cables to be installed within ENT.

8-162
362.30 Securing and Supporting
New exception clarifies the "6 ft whip rule" for luminaire or other electrical equipment within an accessible ceiling rule.


Article 376 Metal Wireways

8-214
376.23 Insulated Conductors
(A) Deflected Insulated Conductors. Revisions to this rule should clear up the issue regarding sizing of metal wireways as it relates to Table 373.6(A).

8-216
376.23 Insulated Conductors.
(B) Metallic Wireways Used as Pullboxes. Additional text attempts to clarify the sizing of metallic wireways, but fails.


Article 378 Nonmetallic Wireways

8-221
378.23 Insulated Conductors.
(A) Deflected Insulated Conductors. Revisions to this rule should clear up the issue regarding sizing of metal wireways as it relates to Table 373.6(A).

8-223
378.23 Insulated Conductors.
(B) Nonmetallic Wireways Used as Pullboxes. Additional text attempts to clarify the sizing of nonmetallic wireways, but fails.


Article 386 Surface Metal Raceways

8-240, 8-241
386.22 Number of Conductors or Cables.
Revised text permits cables to be installed within metallic surface metal raceways.

8-245
386.70 Combination Raceways.
Revised text clarifies that identification can be by methods other than color when surface metallic raceways are used for both signaling and power.


Article 388 Surface Nonmetallic Raceways

8-249, 8-250
Revised text permits cables to be installed within nonmetallic surface metal raceways.

8-245, 8-256
388.70 Combination Raceways.
Revised text clarifies that identification can be by methods other than color when surface nonmetallic raceways are used for both signaling and power.


  Send to a Friend View / Add Comments  

  [ Back to Top ]

Copyright © 2004 Mike Holt Enterprises,Inc.
1-888-NEC-CODE (1-888-632-2633)