300.11, Support From Suspended Ceilings

ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat

Give a Shout Out!

Shout Box

Who's Online Now

0 registered members (), 11 guests, and 26 spiders.

Key: Admin, Global Mod, Mod

Print Thread

Rate Thread

300.11, Support From Suspended Ceilings #121688
08/08/05 10:03 PM 08/08/05 10:03 PM

Admin

OP
Administrator
Member

Joined: Oct 2000
Posts: 3,545
NY, USA

Quote

As I read 300.11, we are not allowed to use the ceiling grid to support out pipe and boxes.

As this pic shows, some firm went to great lengths to manufacture assorted connectors for this specific purpose.

I look at B-Line's catalog shows they make a variety of such connectors (such as model BA-14).

So I ask some questions:

---Is it possible that B-Line would manufacture, even list, items that we're not allowed to use?

----Do I mis-understand the NEC? If I'm to apply the NEC, just how do I ascertain the "ceiling system menufacturers' instructions?"

- renosteinke

Tools for Electricians:

Tools for Electricians, Installers, Maintenance & Service Technicians

Re: 300.11, Support From Suspended Ceilings #121689
08/08/05 10:56 PM 08/08/05 10:56 PM

Tiger

Member

Joined: May 2005
Posts: 706
Crystal Lake, IL USA

I wouldn't expect the manufacturer of the ceiling system to have any instructions for electrical installations.

IMO the UL listing of materials certifies that it "dies" in a safe manner, not that it is proper material according to the NEC.

I'd like to see the item you mentioned. I don't have their catalog.

Dave

Re: 300.11, Support From Suspended Ceilings #121690
08/09/05 05:32 AM 08/09/05 05:32 AM

iwire

Moderator

Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA

Not everyone uses the NEC as written, here in MA I can support electrical equipment from the ceiling tie wires. (Non-fire rated ceilings)

MA amended much of 300.11

Bob Badger
Construction & Maintenance Electrician
Massachusetts

Re: 300.11, Support From Suspended Ceilings #121691
08/09/05 07:54 AM 08/09/05 07:54 AM

electure

Member

Joined: Dec 2000
Posts: 4,280
Fullerton, CA USA

Quote

Not everyone uses the NEC as written

Bob's right. Both B-Line and Caddy sell to an international market.

The Caddy catalog has the disclaimer ..."check with local authority for application approval" on most of these items.

Cooper/B-Line has a different catalog for Europe, Asia, and Africa than that for the Americas.

Re: 300.11, Support From Suspended Ceilings #121692
08/10/05 12:16 AM 08/10/05 12:16 AM

renosteinke Offline

Cat Servant
Member

Joined: Jan 2005
Posts: 5,316
Blue Collar Country

Just so no one get any ideas....This install is in the exoctic locale of Reno, Nv.
As for catalogs, I got the part number from the on-line catalog for North America.
Another thread (in the general forum, I think) mentions the Caddy part numbers.

Moderated by dougwells, electure, gfretwell, HotLine1, Scott35, Trumpy

Featured:

2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

Member Spotlight

mxslick
Atomic City, ID USA

Posts: 803
Joined: October 2004

Show All Member Profiles