The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#121715 - 08/15/05 01:51 PM Conduit Support
Webmaster Offline

Administrator
Member

Registered: 10/07/00
Posts: 3142
Loc: NY, USA
 Quote:
Another one for the "lawyers" out there.

NEC says conduit must be supported- but doesn't say how. This pic shows the most minimal support I've ever seen. I looks like the tie wire was placed when the mortar was laid down.

I believe this was in place since WWII, and only recently supplimented by some proper straps.

- renosteinke

Top
Tools for Electricians:
#121716 - 08/16/05 12:41 AM Re: Conduit Support
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
John,
Is this RMC?.
My understanding of "supported" means having the wieght taken off of it along along it's length.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#121717 - 08/16/05 02:58 AM Re: Conduit Support
George Corron Offline
Member

Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
May also wish to look for the UL sticker on that tie wire as an approved support, might be hard to find.

Top
#121718 - 08/16/05 04:14 AM Re: Conduit Support
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: IL
George,
 Quote:
May also wish to look for the UL sticker on that tie wire as an approved support, might be hard to find.

There is no code requirement that conduit supports be listed. Many of the commonly used supports that are recognized for the purpose are not listed.
Don
_________________________
Don(resqcapt19)

Top
#121719 - 08/16/05 07:35 AM Re: Conduit Support
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
Material here is EMT- made a dull grey color by age.

Top
#121720 - 08/16/05 01:23 PM Re: Conduit Support
mxslick Offline
Member

Registered: 10/24/04
Posts: 785
Loc: Atomic City, ID USA
If it has indeed been in place since WWII, who says it wasn't perfectly legal back then? And if so, the fact it's still hanging on says a lot. How many of today's conduit supports (listed or not) do you think will still be sound in 60 years?

A lot of the old stuff still works better than the new stuff anyway. Ask some of the POCO guys about transformers, for instance.
_________________________
Stupid should be painful.

Top
#121721 - 08/16/05 08:25 PM Re: Conduit Support
Webmaster Offline

Administrator
Member

Registered: 10/07/00
Posts: 3142
Loc: NY, USA
 Quote:
Here's another pic of unusual conduit support. In this one, 1 1/4 PVC is supported by a bicycle hook.

- renosteinke

Top
#121722 - 08/16/05 11:03 PM Re: Conduit Support
mxslick Offline
Member

Registered: 10/24/04
Posts: 785
Loc: Atomic City, ID USA
Okay, now that is just wrong. The bike hook would not in any way,shape or form be an adequate or approved support!
_________________________
Stupid should be painful.

Top
#121723 - 08/22/05 09:21 PM Re: Conduit Support
Webmaster Offline

Administrator
Member

Registered: 10/07/00
Posts: 3142
Loc: NY, USA
 Quote:
here are two more "original" methods to hang your pipe.

Now, code does not allow you to hang a sewer line grom your EMT- but can you do the reverse? Let alone, use rope?

And what about hanging RMC from EMT, using "plumbers' tape?"

- renosteinke



Top
#121724 - 08/29/05 04:56 PM Re: Conduit Support
VAElec Offline
Member

Registered: 07/26/05
Posts: 48
Loc: Sterling, Virginia, US
At least they used compression fittings below the plumbing pipe (wet location if I have seen one!), and I think that this is the first time I have seen a picture of knob and tube with EMT in the same shot. Is that romex branching off the knob and tube in the last pic? That is what I am used to seeing when people tap off of knob and tube. Code acceptable or not, i've seen it before.
_________________________
Pete

Top
Page 1 of 2 1 2 >



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals