2017 new rules on torque reguirements and documetion.

[reyamkram]

I was at a seminar about the 2017 NEC, I was told that now I need to torque and document what I did, Where in the 2017 do I
find this article, and dose it only apply to contractors, or dose I it apply to industrial maintenance personnel ??

any and all informational is very much appreciated.

Thank You.

 

[infinity]

Here's the wording from the new section in the 2017:

110.14(D) Installation. Where a tightening torque is indicated as a
numeric value on equipment or in installation instructions
provided by the manufacturer, a calibrated torque tool shall be
used to achieve the indicated torque value, unless the equip‐
ment manufacturer has provided installation instructions for
an alternative method of achieving the required torque.

 

[don_resqcapt19]

While this was new code text for 2017, it is not really a code change. Compliance with the manufacturer's torque specs was required by 110.3(B). Too many were not following the manufacturer's requirements so they added specific code text about torque.

 

[tom baker]

Also please see Informative Annex I, this was added to the code before 110.14(D).
And torqueing has always been a requirement as Don points out.
I read it as an installation requirement, remember the NEC is an installation standard, not maintenance. There is a separate NFPA 70 document on maintenance.
From my experience, retorquing can be problematic.
But tests at IAEI mtgs document the correct torque can not be achieved by most with out a torque tool. Since this rule was adopted, there are some nice torque tools out from Klien.
I use Wiha torque screwdrivers as I work on terminal blocks with a 5-7 in pound requirement

 

[Sierrasparky]

From my experience, retorquing can be problematic.

Why do you feel that way. Most lugs I install and torque do not have a use once set up or special crush washer.
I was taught to squeeze down on the conductors, make sure there is no gaps in conductor strands, and then torque to make sure the conductors are seated well.