Make up for rigid conduit

[tmstone]

Where in the code book can I find the tightness for making up conduit or fittings

 

[charlie b]

It would not be in the NEC. Try the manufacturer's instructions.

 

[Cavie]

you can't. wrench tight.

 

[raider1]

I agree with Cavie,

The NEC does use the term "Wrenchtight" when dealing with grounding and bonding when using a metal raceway. But there is no definition of how tight "Wrenchtight" is.

Chris

 

[wirenut601]

conduit tightness

conduit tightness

J.B.B. just before breaking

 

[petersonra]

IIRC, for hazardous areas, it is a certain number of threads.

 

[hillbilly1]

I remember years ago reading something that said .....at least three threads shall make contact, or something to that wording, don't remember where I read it though. Doesn't really say how tight though.

 

[tryinghard]

tmstonem, Loose ? are ya trying to stretch out the conduit:roll:? Might have to cut & thread another. Welcome to the forum I've stretched a few but no more now that I bird-dog effective fault paths, tights best

 

[RyanA]

IIRC, for hazardous areas, it is a certain number of threads.

Isn't it five threads for hazardous areas?

 

[LarryFine]

But there is no definition of how tight "Wrenchtight" is.

 

[LarryFine]

But there is no definition of how tight "Wrenchtight" is.

"Now, THAT'S a WRENCH!"​

 

[chevyx92]

Where in the code book can I find the tightness for making up conduit or fittings

If its explosionproof usage then must be at least 5 turns tight. For anything else I dont think there is a specific requirement.

 

[billsnuff]

4.3.3.2 Threaded fittings
Threaded joints, both fitting to conduit and fitting to
threaded integral box entries, shall be made up
wrenchtight. (NOTE: Avoid excessive force. Generally a
force equivalent to handtight plus one full turn with an
appropriate tool is recommended. This should assure
engagement of at least three full threads.)

 

[billsnuff]

http://www.steelconduit.org/pdf/ConGuide.pdf

this is where my last post is from. hope it helps.

 

[JES2727]

An instructor of a code class I took years ago made mention of "wrenchtight" and then pointed out that tongue-and-groove pliers (Channellocks) are not wrenches. So if you put your 440's on it and turn it as hard as you can, it's still not tight enough!

 

[tryinghard]

"Now, THAT'S a WRENCH!"​

Must be alunimum

 

[hillbilly1]

4.3.3.2 Threaded fittings
Threaded joints, both fitting to conduit and fitting to
threaded integral box entries, shall be made up
wrenchtight. (NOTE: Avoid excessive force. Generally a
force equivalent to handtight plus one full turn with an
appropriate tool is recommended. This should assure
engagement of at least three full threads.)

That must have been where I read it!