Make up for rigid conduit

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raider1

Senior Member
Staff member
Location
Logan, Utah
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
 

hillbilly1

Senior Member
Location
North Georgia mountains
Occupation
Owner/electrical contractor
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

Senior Member
Location
California
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 :)
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
But there is no definition of how tight "Wrenchtight" is.

images
 

billsnuff

Senior Member
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.)
 

JES2727

Senior Member
Location
NJ
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!
 

hillbilly1

Senior Member
Location
North Georgia mountains
Occupation
Owner/electrical contractor
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!
 
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