strap for conduit

[d1reyad]

how many FT apart you have to strap pipe and many FT from a pull point you need a strap according to NEC and NYC code

 

[480sparky]

how many FT apart you have to strap pipe and many FT from a pull point you need a strap according to NEC and NYC code

For the NEC: it depends on the pipe. Arts. nnn.30(A) and (B)

 

[Mule]

Maximum....300ft between straps on 1/2"emt...Art 1248.30 fpn#77

 

[celtic]

Horizontal, vertical or in a ditch?

 

[d1reyad]

strap

strap

how many feet apart if you building a rack virtical you need the kindroff to be apart in nyc and fram a pull point

 

[mcelweec@gmail.com]

NYC code book is the 2005 NEC with 2007 NYC amendments,there are no amendments for conduit supporting.

 

[infinity]

For EMT it's 3' from a box or pull point and every 10' after that. Are people telling you every 5'?

 

[Mule]

For EMT it's 3' from a box or pull point and every 10' after that. Are people telling you every 5'?

1/2" emt starts to get the "droops" placing straps on 10ft centers on a hortizontal run, so I shorten it up some....actually I hardly ever run 1/2....min size for the mule 3/4...well most of the time....

 

[d1reyad]

strap

strap

that is what i was told every 5 ft

 

[d1reyad]

strap

strap

yea i was told every 5 ft is that true?

 

[Rewire]

If you are running it alone I woul recomend using two straps on the first 10 ft then you can use it to help support the next ten footer then every 10ft

 

[daleuger]

I don't know about NYC but NEC says every 10 ft. I usually like to throw one up within a couple feet of every coupling. An extra one here and there if that pipe starts sassing me.

Edit to add: I believe code also says one within 3 ft of a pull point.

 

[infinity]

yea i was told every 5 ft is that true?

No, it's not true. The NEC rule is every 10' and 3' for EMT. Look in Article 358. For the NYC amendments look here:

http://www.nyc.gov/html/dob/downloads/pdf/ll49of2006.pdf

 

[MarkyMarkNC]

Strapping every 5' is what I like to call "Urban Legend" code. It's the code that has never existed, but which has nevertheless been passed down from generation to generation by "electricians" who have never cracked open a code book.

 

[infinity]

Strapping every 5' is what I like to call "Urban Legend" code. It's the code that has never existed, but which has nevertheless been passed down from generation to generation by "electricians" who have never cracked open a code book.

It likely comes from people thinking that the code minimum is every 10' and a better job would have them spaced closer together. If you have ever worked in a subway the transit code may be every 24" or 30".