Nipples....

[Alwayslearningelec]

Do you guys usually make your own or buy them "prefab" as you see below?

 

[Alwayslearningelec]

Also it seems there are no "prefab" EMT nipples and most all are RGS? Does that make sense? What if your using EMT on the job why wouldn't you use EMT for the nipple?

 

[ActionDave]

You cut EMT to whatever length you need and put connectors on the end to make a nipple.

 

[Alwayslearningelec]

You cut EMT to whatever length you need and put connectors on the end to make a nipple.

I understand that. Was also curious as to why they seem not to sell only RGS nipples.

 

[augie47]

I understand that. Was also curious as to why they seem not to sell only RGS nipples.

You might not always have the equipment handy to make a RGS nipple (plus it takes time) whereas all you need for an EMT nipple is a saw.

 

[Alwayslearningelec]

So nipples are not always RGS.

 

[letgomywago]

So nipples are not always RGS.

Some like chase nipples and offset nipples are more of a fitting than RGS conduit but it is made from the same materials excerpt the chase nipples seam to be die cast.

 

[infinity]

Was also curious as to why they seem not to sell only RGS nipples.

Two reasons, one it's cheaper to buy them than make them in the field. And two, very short nipples are difficult or impossible to thread in the field with standard threading equipment.

 

[electrofelon]

So nipples are not always RGS.

I don't think that the NEC defines or even uses the term nipple. You'd probably have to look at something like the UL white book to get a definition. I can't think of a case of where it would make a difference if something was actually a nipple or not.

 

[electrofelon]

Sometimes I will make a nipple out of emt, and other times I will buy a threaded rigid one. Usually it will come down to whether I have the appropriate size EMT laying around or not. I'm not going to buy a stick to make up a couple nipples.

 

[Jraef]

So nipples are not always RGS.

Well, they could be IMC, PVC or aluminum. The term transcends electrical work too, so add brass, stainless etc.

Definition of ”nipple” as it relates here:

4
: a pipe coupling consisting of a short piece of threaded tubing

So by definition it cannot apply to EMT. A short piece of EMT is just a short piece of EMT.

 

[ActionDave]

To me a nipple is any piece of conduit 24" or less.

 

[don_resqcapt19]

To me a nipple is any piece of conduit 24" or less.

A common assumption based on the 24" ampacity adjustment rule.

 

[infinity]

Well, they could be IMC, PVC or aluminum. The term transcends electrical work too, so add brass, stainless etc.

Definition of ”nipple” as it relates here:

So by definition it cannot apply to EMT. A short piece of EMT is just a short piece of EMT.

Where is that definition from?

 

[Jraef]

Where is that definition from?

Dictionary.

 

[Joethemechanic]

What's the problem with using a ridgid nipple? I do it all the time if I have them.

 

[don_resqcapt19]

Dictionary.

That is the correct dictionary, but no idea of what it really means
"a pipe coupling consisting of a short piece of threaded tubing"
Based on that there are no RMC or IMC nipples as they are not tubing.

 

[Joethemechanic]

tubing.

the leisure activity of riding on water or snow on a large inflated inner tube.

 

[kec]

Do you guys usually make your own or buy them "prefab" as you see below

It depends on your conduit installation method.Standard lengths as shown are available but if you are in-between pre made lengths then yes.

Also there are threadless connectors.

 

[LarryFine]

the leisure activity of riding on water or snow on a large inflated inner tube.

Tubing or not tubing; that is the question.