Polaris connector absolutely destroying aluminum wire at required torque

[Joethemechanic]

I think next week that guys regular $800 paycheck would be 800¢ due to a clerical error, but you'll straighten out the error on the following pay period
He'll just have to eat some Ramen this week

 

[dkarst]

Somewhere along the line the apprentice should have taught by an experienced person does this spec make sense... 15 FOOT lbs is something equivalent to a gallon container of milk pulling on lever arm of 2 feet. My mower blades sheaves are something like 90 foot pounds and I'm a weenie as I was honking on it to achieve.

 

[kwired]

How could someone get anywhere near that without holding the Polaris tap in a bench vise and destroying it?

Agree, my first thought was would the device even handle 180 ft-lb without breaking but how do you hold on if tightening to that level

 

[Joethemechanic]

Agree, my first thought was would the device even handle 180 ft-lb without breaking but how do you hold on if tightening to that level

Hey, that Oompa Loompa worked hard at F ing that tap up. And he must have used some ingenuity to get it that tight. You got to give him some kinda credit

 

[kwired]

Hey, that Oompa Loompa worked hard at F ing that tap up. And he must have used some ingenuity to get it that tight. You got to give him some kinda credit

The set screw possibly has some steel in it but the connector body is mostly an aluminum alloy AFAIK, just can't believe that body can take that kind of pressure. Stripped threads at the very least?

 

[MTW]

Interesting,Besmirching the connector manufacturer and then the inspector and then failing to apologize for it.

Seems like the inspectors request was the correct way to proceed, or better staff supervision.

Maybe Newton-meters would be a more appropriate value for the manufacturer to use for dyslectic folks that have a hard time,
differentiating the difference between inch lbs and foot lbs. Because common sense didn't seem to prevail. I remember days in the lab having to convert values often, sure made you pay better attention.

 

[electrofelon]

Hey, that Oompa Loompa worked hard at F ing that tap up. And he must have used some ingenuity to get it that tight. You got to give him some kinda credit

 

[brycenesbitt]

Damn.
I hate making mistakes, and especially public ones.
But turns out I besmirched the apprentice.

The NSI specifications said 180 in*lbs


But I ran the inspection video again. They stripped the insulation off
the center of the Al wire, and went for it:









The words said in the video were foot*pounds, but the tool clearly shows inch*pounds.
They struggled, it took two, but they topped out at 190 in*lbs on the video and stopped.

The tool did show "out of range" which is confusing me.
I'll send the video to anyone who wants.

The machine showed green until about 150 in*lbs, then went red. I don't know what that means, but will try to learn:


I'm back to worrying about crushing historic stranded Al wire with NSI Polaris connectors.
Sorry for the misinformation.