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In Reply to: RE: Re UL approval posted by Basslines on June 25, 2014 at 16:15:42
nt
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UL 817 1.1 This standard specifies the requirements for cord sets and power-supply cords employing molded-on or assembled-on fittings, rated 600 V maximum, and intended for use in non-hazardous locations in accordance with the Canadian Electrical Code, Part I, CSA C22.1-12 and General Requirements – Canadian Electrical Code, Part II, CSA C22.2 No. 0-10, in Canada, and the National Electrical Code, ANSI/NFPA 70, in the United States.
You don't get to make up the rules they are already made up by the NEC which dictates everything up to and including insulation color. You could send in a cord that doesn't follow the prescribed standards but that would be a waste of money. After it is made in accordance it still has to be verified by UL that it pass the various parameters like, Conductor secureness test, Security of insulation test, Strain relief test, Dielectric voltage-withstand test, Insulation resistance test, Accelerated aging test, Crushing test, Impact resistance test, Flexing test, Jacket retention test, Adhesion test, Cycling heat test. UL can't rewrite the NEC code. The NEC specifies either rubber, thermoplastic, or thermoset which it specifically differentiates from FEP and PTFE.
what I stated?
Teflon is not on the list of approved wire. That doesn't stop use of teflon for speaker cables and interconnects, which pretty much avoid UL approval because they are low level voltage carriers.
I'm pretty sure NEC does not cover all audio electronic components nor all electronic components, and neither does UL for that matter...
Teflon coated insulated power cords do not make UL approval because NO one has submitted any. That 'NO one' equals the NEC and 'has submitted any' equals hasn't approved for use.
I see your point Stu, essentially the same. PTFE and FEP are approved for various applications from the NEC just not external power cords which is the topic at hand.
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