Terminal Listing

[infinity]

At a CEU seminar the speaker stated that this terminal when used with two conductors were permitted to be used only to terminate parallel conductors and therefore are only permitted with conductors that are the same size as part of the listing. Has anyone ever heard of those two requirements when landing two conductors?

 

[Dell3c]

honestly.. no.. I haven't heard such requirement.

 

[petersonra]

I've seen that requirement more than once where you can have two wires on the terminal as long as they're the same size and both are stranded or both are solid. I we'll see if I can find such a terminal. Of course now that I've opened my big mouth about it I won't be able to find one with that kind of restriction.

 

[Carultch]

I've seen that requirement more than once where you can have two wires on the terminal as long as they're the same size and both are stranded or both are solid. I we'll see if I can find such a terminal. Of course now that I've opened my big mouth about it I won't be able to find one with that kind of restriction.

Here's an example where it explicitly states "No mixing wire gauges":

Buy Double Wire Cable Lugs, 2 wires per lug

ihiconnectors.com

This doesn't necessarily mean that you could only use this for conductors in parallel, just that you could only use it for two conductors of the same size.

I have asked Square D about the "snowman" lugs they use on the 400A disconnects, and whether it was permitted to mix sizes in the two-wire range within the same barrel, and the answer was that it was permitted. Just not allowed to mix aluminum and copper in the same barrel (which I expect), even though the lug is rated for use with wire of either metal.

 

[Hv&Lv]

I don’t buy it...
How many times have we used these to terminate wire feeding two or even three different size panels with different size wires?

It’s listed 486B.
Here it is

http://www.pts.ir/panel/images/post/43vdc1zrlyUL%20486a-486b-2013.pdf

 

[Hv&Lv]

Here's an example where it explicitly states "No mixing wire gauges":

Buy Double Wire Cable Lugs, 2 wires per lug

ihiconnectors.com

But the way I’m reading that that’s two wires per barrel (when allowed) you can’t mix gauges.

 

[Carultch]

It’s listed 486B.
Here it is

http://www.pts.ir/panel/images/post/43vdc1zrlyUL%20486a-486b-2013.pdf

Any particular part of that document you intended to reference?

 

[Dell3c]

Well, welcome to the 21st century.
Noticing having two(2) 1/0 conductors (together) under same lug (hole). I remember @ one time, must use lug having (tear-drop type hole) being the only mechanical lug acceptable for "more than one conductor" in same lug hole.

 

[infinity]

Well, welcome to the 21st century.
Noticing having two(2) 1/0 conductors (together) under same lug (hole). I remember @ one time, must use lug having (tear-drop type hole) being the only mechanical lug acceptable for "more than one conductor" in same lug hole.

Not visible from the photo but that is a tear drop shaped hole in the terminal.

 

[Dell3c]

infinity.. Open link in post #6, the third window in the link. Click on lug (expand) w/two 1/0 conductors. in same hole.

 

[tortuga]

This kinda thing is why the code should contain 'construction specifications' for something as simple as a lug and not require them to be listed.
There are ongoing efforts to make every nut, bolt, screw and ziptie you all use to be 'listed'.