Using Spiral Wrap inside a Control Panel

[xptpcrewx]

Wondering if using Spiral Wrap is prohibited anywhere in the NEC. Some manufacturers show their Spiral Wrap as being UL Recognized and others don't have any markings whatsoever. Any clarification would be appreciated. Thanks!

 

[rc/retired]

Just curious, what's spiral wrap?

 

[Besoeker3]

Just curious, what's spiral wrap?

Cable-Tex Spiral Binding - BLACK Cable Tidy Wrap 6mm x 2m

 

[LarryFine]

Just curious, what's spiral wrap?

 

[rc/retired]

Thank you Besoeker & Larry. In 45 years I've never seen nor heard of it.
That said, I have to say it's not specifically prohibited, however, (there's always a however in life), I would think 110.3 would require some kind of listing.

 

[Bluegrass Boy]

Thank you Besoeker & Larry. In 45 years I've never seen nor heard of it.
That said, I have to say it's not specifically prohibited, however, (there's always a however in life), I would think 110.3 would require some kind of listing.

It is common in control panels in factories. Usually where wiring is ran to lights, switches, etc, on a hinged door. It gives a little protection for the wires, and keeps them held together, and allows them to move some when the door is opened or closed, and helps prevent wires from being pinched.

 

[rc/retired]

Got it. Thank you much!

 

[tom baker]

Thank you Besoeker & Larry. In 45 years I've never seen nor heard of it.
That said, I have to say it's not specifically prohibited, however, (there's always a however in life), I would think 110.3 would require some kind of listing.

If this is a UL508A control panel, 110.3B does not apply. The UL procedure the panel builder uses would list each item used, including spiral wrap. If not a UL 508A panel, then as pointed out 110.3 B may apply.

 

[don_resqcapt19]

Thank you Besoeker & Larry. In 45 years I've never seen nor heard of it.
That said, I have to say it's not specifically prohibited, however, (there's always a however in life), I would think 110.3 would require some kind of listing.

110.3 does not require listing for any product. It simply require that a listed product be installed in used in accordance with the listing and labeling instructions.
Not everything we install as part of the electrical installation is required to be a listed product. Somethings are and other things are not. You have look in each article. If you are in Chapter 3, the xxx.6 section will be the section that says you must use a listed product. The use of xxx.6 for listing requirements is being expanded to other Chapters in the code, but it is not a universal location for listing requirements outside of the Chapter 3 articles.

 

[rc/retired]

Thanks. I appreciate the clarification

 

[xptpcrewx]

All good information. To recap, if a control panel falls under UL 508A, I would need to check the BOM and only replace items with the exact materials the panel was tested with to not potentially risk violating the listing of the assembly. If this an industrial control panel that doesn't fall under UL 508A, I would then defer to NEC Section 110.3. Do I have that right?

I noticed no-one mentioned anything about Article 409. Can someone confirm that ALL industrial control panels are subject to the rules of Article 409 (regardless if its UL 508A compliant)? Thanks in advance.

 

[paulengr]

All good information. To recap, if a control panel falls under UL 508A, I would need to check the BOM and only replace items with the exact materials the panel was tested with to not potentially risk violating the listing of the assembly. If this an industrial control panel that doesn't fall under UL 508A, I would then defer to NEC Section 110.3. Do I have that right?

I noticed no-one mentioned anything about Article 409. Can someone confirm that ALL industrial control panels are subject to the rules of Article 409 (regardless if its UL 508A compliant)? Thanks in advance.

If it’s an ICP it falls under that section. But that’s a Listed assembly, kind of like installing say a combination starter. Plenty of things that look and smell like an ICP are not. Like custom built gear where all the components are Listed assemblies installed in an enclosure. Then it must be NEC compliant not UL 508A. Or you can get the panel true third party inspected making it UL508 (no A).

 

[tom baker]

All the 100 or more ICPs I have installed were UL508B. In my state Art 409 is not referenced. I can build an ICP, but all the parts have to be UL listed, (many common parts like terminal blocks are UR for use in a 508B panel.

 

[xptpcrewx]

Thanks everyone.

 

[LarryFine]

Would electrical tape need to be listed?

 

[Fred B]

Would electrical tape need to be listed?

Don't know, never considered, but have seen some with UL on it and I've seen without it on role. Usually the one with UL was more expensive but seemed more durable - stayed stuck better, so I've used the UL one just because of that. I'll used the cheap non UL just to rig for pulling or temp strapping. Be interested in learning if mandatory.

 

[paulengr]

Would electrical tape need to be listed?

Depends on the application. Terminations need to be done according to Listing. This usually means you follow manufacturers instructions.

One interesting thing about tape is that UL requires it to have a “600 V only” label, even tapes like 3M Scotch 13 (semicon) that is useless below 600 V.

 

[don_resqcapt19]

...
One interesting thing about tape is that UL requires it to have a “600 V only” label, even tapes like 3M Scotch 13 (semicon) that is useless below 600 V.

It does not appear that Scotch 13 is listed, but the product specs do say "rated for 600V applications". I wonder if that is because that product is used on the outside of the cable's dielectric insulation?

It also does not appear that Scotch 130C is listed...that is marked for applications up to 69kV.

 

[LarryFine]

Would electrical tape need to be listed?

What I meant was, what if I used tape as a spiral wrap, or to bundle MWBCs, not as insulation?

 

[paulengr]

What I meant was, what if I used tape as a spiral wrap, or to bundle MWBCs, not as insulation?

Doesn’t that make it hardware...so no Listing? Sort of like whether cable tray is support or bonding?