ALL of my wire comes from established domestic manufacturers...
STILL, I actually had ONE single instance of bad THWN-2. While it had automatically been megged at the factory -- meggers don't detect flamingly open gaps in the insulation -- as in bare copper the size of a pin hole.
In the field we were able to find this flaw by shutting down a school -- in mid class! You see, the VERY last circuit to be run was from a 480/277 panel to a flag pole illumination fixture. Everything was going so swell, then -- poof -- the MAIN was tripped.
Seconds later I rebooted the MAIN and killed the branch offender. The conductor was pulled. Yeap. It had a gap in the insulation.
That's the SOLE and only flaw I've ever had with any wire or cable I've ever come across. BTW, I saved it for the boss. He was astounded, too.
Such flaws are THAT rare in American wire/ cable.
...
Trumpy
I only ever meg MAINS bussing. American factories automatically meg MC. That's why our stuff has the open conductors flailing off into the wind.
Your experience may vary.
Flawed production just gets recycled right on the spot... never to be seen by the outside world.
America invented quality control. The ultimate in QC is practiced in rocketry. Today's rocketry is astounding. The failure rate is so low -- for the most complicated gadgets flying.
Last edited by Tesla; 11/18/13 07:14 PM.
