ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Questioning the electrical norms
by HotLine1 - 03/04/21 12:35 PM
Lock-down Thread
by gfretwell - 03/03/21 12:38 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 17 guests, and 20 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
Re: Custom machine. Where does NEC requirements stop? [Re: HotLine1] #217894 12/30/16 06:06 PM
Joined: Jul 2004
Posts: 783
L
LarryC Offline OP
Member

Quote

Please note that the opinions herein are my personal opinions, based on guidelines within the NJ UCC, and may be different in other jurisdictions.



Quote
Cabling from one piece of equipment to other equipment of the same system, in trays, would require 'listed' trays, bonding, and cabling.


So if it low voltage data cables, it stills needs to be cable tray cable?

Thanks

Work Gear for Electricians and the Trades
Re: Custom machine. Where does NEC requirements stop? [Re: LarryC] #217895 12/31/16 03:58 AM
Joined: Jul 2004
Posts: 9,571
G
gfretwell Online Content
Member
Data and class 2 gets a big break there. You really just need to keep them neat but your IT guy will have grounding requirements that may exceed art 250.


Greg Fretwell
Re: Custom machine. Where does NEC requirements stop? [Re: LarryC] #217896 12/31/16 03:19 PM
Joined: Jul 2004
Posts: 783
L
LarryC Offline OP
Member
http://www.belden.com/docs/upload/Belden-WP-Taking-the-Mystery-Out-of-600V-Ethernet-Applications.pdf

Quote
Regulations: NFPA 79 vs. NEC

Virtually all systems employed in manufacturing plants or industrial facilities are subject to the provisions of the NEC, unless they fall under the specific scope of the NFPA 79, the Electrical Standard for Industrial Machinery.

The scope of NFPA 79 is defined as: “The provisions of this standard shall apply to the electrical/electronic equipment, apparatus, or systems of industrial machines operating from a nominal voltage of 600 Volts or less, and commencing at the point of connection of the supply circuit conductors to the electrical equipment of the machine.”

Further, under Section 1.5 of NFPA 79, Specific provisions not made in relation to NEC “On any point for which specific provisions are not made in this standard, the provisions of NFPA 70 shall be observed.”

Additionally, per Section 1.4, Specific provisions other than 79 “…the wiring between component machines of and industrial manufacturing system shall be covered by NFPA 70” with the “Exception: that wiring of component machines of an industrial manufacturing system that is supplied by the manufacturer as an integral part of the system is adequately protected and supported and meets the requirements of this standard.”

Given the above, one would conclude that any field wiring installed and terminated at the manufacturing site – unless done so by the OEM operating under NFPA 79 – would be subject to the provisions and requirements of the NEC, and only field wiring wholly inside the manufacturer supplied electrical or electronic equipment would be subject to NFPA 79

Re: Custom machine. Where does NEC requirements stop? [Re: LarryC] #217897 12/31/16 04:43 PM
Joined: Jul 2004
Posts: 783
L
LarryC Offline OP
Member
Information from Belden.

Regulations: NFPA 79 vs. NEC

Virtually all systems employed in manufacturing plants or industrial facilities are subject to the provisions of the NEC, unless they fall under the specific scope of the NFPA 79, the Electrical Standard for Industrial Machinery.

The scope of NFPA 79 is defined as: “The provisions of this standard shall apply to the electrical/electronic equipment, apparatus, or systems of industrial machines operating from a nominal voltage of 600 Volts or less, and commencing at the point of connection of the supply circuit conductors to the electrical equipment of the machine.” Further, under Section 1.5 of NFPA 79, Specific provisions not made in relation to NEC “On any point for which specific provisions are not made in this standard, the provisions of NFPA 70 shall be observed.” Additionally, per Section 1.4, Specific provisions other than 79 “…the wiring between component machines of and industrial manufacturing system shall be covered by NFPA 70” with the “Exception: that wiring of component machines of an industrial manufacturing system that is supplied by the manufacturer as an integral part of the system is adequately protected and supported and meets the requirements of this standard.”

Given the above, one would conclude that any field wiring installed and terminated at the manufacturing site – unless done so by the OEM operating under NFPA 79 – would be subject to the provisions and requirements of the NEC, and only field wiring wholly inside the manufacturer supplied electrical or electronic equipment would be subject to NFPA 79.

Re: Custom machine. Where does NEC requirements stop? [Re: LarryC] #217898 12/31/16 06:32 PM
Joined: Apr 2002
Posts: 7,235
HotLine1 Offline
Member
Larry:

"So if it low voltage data cables, it stills needs to be cable tray cable?"

800.100 (H) specs a bunch of comm that is OK in tray. IMHO, there is no 'short' answer. With todays cabling being 'a cable of many uses' you should find CT rated/labeled comm with little or no problems. You may consider a 'multi-use' data cable as your "go to".

As Greg said, keep it neat,! Some inspectors will be 'happy' if it's neat and may not look further.




John
Re: Custom machine. Where does NEC requirements stop? [Re: HotLine1] #217905 01/02/17 01:01 PM
Joined: Jul 2004
Posts: 783
L
LarryC Offline OP
Member
Thanks for the replies. I dug even further and yes it does get more complicated.

The last two blank posts are where I tried to copy and paste a section of a white paper from Belden cable, about their 600V TC Ethernet cable. It has a 4 paragraph section about where NFPA 79 and 70 apply.

Why it did not post, I do not understand. It looked good in the preview page.

I will bring this up at work tomorrow and we will see what happens.

Larry

Page 2 of 2 1 2

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
noderaser
noderaser
Portland, Oregon, United States
Posts: 404
Joined: March 2007
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
275,648 Are you busy
209,573 Re: Forum
196,928 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3