On Feb 16, 2008 2:33 AM, David VanHorn <microbrix@gmail.com> wrote:
> I had to take a design back to UL for a change to be put in.
> Our manufacturing guy had this change he was trying to ramrod thru UL,
> and had been unable to get any motion on it for weeks.  They were
> telling me how many months backlog it was, and basically the CEO
> handed it to me and told me to SIT on it and not come back till it was
> DONE!
>
> So I drove up to UL in SF, and was back the next day. CEO was
> disbelieving, but UL became very cooperative once I explained that the
> mod was because the existing UL approved design would burst into
> flames in some conditions.
>
> :)
>

Interesting story. Thanks for the sharing.

>From what I learnt, UL has the review mechanism, one case handler
and one reviewer. So I am not surprised that they will not be able to
exhaust all the corner cases. And UL cert does not cover all the
safety aspect. The emphasis of UL safety has something to do
with the US situations. The emphasis of EU safety regulations has
something to do with the EU situations. Then there are countries
outside US and EU.

Xiaofan
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