On 12/23/2013 1:45 PM, Let's get it right! wrote:
replying to bud-- , Let's get it right! wrote:
null wrote:

Write a code change proposal. I am confident you will receive the
appropriate consideration. Petition UL to change its standards. I am
confident you will receive the appropriate consideration. A 15A
circuit breaker does not protect #16 or #18 wires. Include in your
petition to UL and the NEC prohibiting anything smaller than #14 wire.
My desk lamp deserves a #14 cord. And include in your code change
proposal correction for the blatant over-sizing of protection for
fixture wires in 240.5-B-2. Also include in your code change proposal
correction for the blatant over-sizing of circuit breakers for motors,
and even worse, welders. And I don't even want to think about what
they do with fire pumps - it could cause a fire. Everyone understands
your argument. As I have explained several times, including quoted
above, 110.3 (inspection) is not used for "listed" equipment. The AHJ
does not second guess the listing standard. The AHJ determines the
device is used according to the manufacturers instructions and
conditions of listing. I am a licensed master electrician. I have
explained how the NEC and UL work. Are you Pete C. in drag?


U.L. isn't the problem. They are doing it right!

UL lists #18 extension cords. UL knows they know those cords will be
used on 20A circuits. #18 wire in a cord is rated 10A, too low for a 15A
circuit.

The problem is interpretation of NEC. You can't protect a listed device
that utilizes a NEMA 5-15 power cord set from a 20 ampere circuit breaker.
Goggle McMaster Carr, extension cords. None are rated at more than
15-amperes @ 125 VAC. See the problem?

The NEC explicitly allows home-made cord sets with #16 wire (13A) on 20A
circuits.

The NEC allows UL listed extension cords with 15A plugs on 15 and 20A
circuits.

The system is working as intended by UL and the NEC.

You are "an arrogant SOB" wanting New Orleans to enforce the NEC other
than how it is clearly written.


If you don't like how it works write a code change proposal and petition
UL to make changes in its standards.