On 11/23/2013 12:02 PM, Nightcrawler® wrote:

"bud--" wrote in message
eb.com...
On 11/22/2013 10:15 PM, Nightcrawler® wrote:

Lugs are not structural and the lug is not steel. The handbook torque
values are likely way too high.

The handbook is for nuts and/or bolts.

You included "allen heads". And I read the original question as torquing
wire connections.


That is a good source, but the torque recommended by the manufacturer
of the lug should be used.

Um, the term ubiquitous was used. Do you know what that word means in the
context used?

Only way I can read it is you use the Burndy torque for other
manufacturers. As I wrote "that is a good source, but the torque
recommended by the manufacturer of the lug should be used".


What a great idea. You start with an engineered lug where expansion
rates are critical for a reliable connection, and replace the screw
from elsewhere. Steel would be a particularly bad idea.
Did you install the lug that failed for Danny?

Oh, you so funny. The replacement was from an engineered lug. It is just
a bit longer.

Not at all obvious from what you posted. That means you are getting set
screws from other lugs, either recycling from junked lugs or junking new
lugs to get the setscrews.

Technically the lug is no longer UL listed. But ignoring that, I don't
ever remember ever having a set screw bottom when using a lug designed
for the size of wire.


You shouldn't drive the screw past the threads if you are using a wire
size within the rated (minimum size) capacity of the lug.

You would be surprised. Not all wire is equal. Locomotive cable compresses
more readily than standard copper wire. When using crimp terminals we often
soldered them afterwards. The fine strands have a way of working loose,
even
after max compression with a hydraulic crimper.

"110.14 Electrical connections
....
Connectors and terminals for conductors for more finely stranded than
Class B and Class C stranding as shown in Chapter 9, Table 10, shall be
identified for the specific conductor class or classes."
(Also appears in 690.31-F for photovoltaic.)

If the setscrew drives past the threads with locomotive cable you are
probably not using lugs designed for fine stranded cable.

Not all of the terminations
I had to make were static. Vibration and movement are present. My work was
not residential, it was industrial. Regardless, I still had lugs bottom out
using a conductor well within the lug's rating.

Do not approach me as if I
have minimal experience with such things, it is rather arrogant of you.

I approach what anyone says based on the accuracy of what is said.
Some of what you post has problems. Most is quite helpful.