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'[PICLIST] Fw: Re: +AFs-OT+AF0-: UL certification r'
2001\08\07@144428 by Lawrence Lile

----- Original Message -----
From: +ACI-Lawrence Lile+ACI-
To: +ACI-Lawrence Lile+ACI-
Cc: +ADw-micro+AF8-eng+AEA-HOTMAIL.COM+AD4-
Sent: Tuesday, August 07, 2001 1:18 PM
Subject: Re: Re: +AFs-OT+AF0-: UL certification really required?

+AD4- Part 2:  What does UL Listing really mean?
+AD4- UL was originally an arm of the fire insurance industry.  Their biggest
+AD4- focus has always been fire safety.  They also focus on shock hazards, and
+AD4- few other things.
+AD4- UL Listing means a product has gone through a series of tests to prove
+AD4- it does not exceed allowed operating temperatures for plastics, it has
+AD4- certain minimum clearances around live electrical parts, live parts are
+AD4- enclosed with suitably durable materials  to prevent little fingers from
+AD4- grabbing live parts, insulation is adequate and within it's temperature
+AD4- rating, and the product won't start a fire even if the temperature
+AD4- fail, and some other tests.
+AD4- UL doesn't test for a number of things such as small parts law (baby
+AD4- swallowable toys), whether a person could get a finger chopped off in a
+AD4- whirling fan blade, that the product will work more than once, that the
+AD4- product functions as advertized, or that the product even works at all.
+AD4- is amazing that UL is seen as a stamp of quality, given all the things
+AD4- don't give a hoot about.
+AD4- -- Lawrence Lile
+AD4- +AD4- ----- Original Message -----
+AD4- +AD4- From: +ACI-Micro Eng+ACI- +ADw-micro+AF8-eng+AEA-HOTMAIL.COM+AD4-
+AD4- +AD4- Sent: Tuesday, August 07, 2001 7:35 AM
+AD4- +AD4- Subject: +AFs-OT+AF0-: UL certification really required?
+AD4- +AD4-
+AD4- +AD4-
+AD4- +AD4- +AD4- If I have something that drives a motor, destined to be installed in a
+AD4- +AD4- +AD4- comsumer enviroment, must it be UL certified?  This will be behind a
+AD4- +AD4- panel,
+AD4- +AD4- +AD4- no exposed wiring, etc.
+AD4- +AD4- +AD4-
+AD4- +AD4- +AD4-
+AD4- +AD4- +AD4- I heard once that UL certification was tested not to
+AD4- or
+AD4- +AD4- +AD4- burn up due to normal idiot operation, but never meant as a total
+AD4- +AD4- +AD4- certification.
+AD4- +AD4- +AD4-
+AD4- +AD4- +AD4- Comments?
+AD4- +AD4- +AD4-
+AD4- +AD4- +AD4- Get your FREE download of MSN Explorer at
+AD4- +AD4- +AD4-
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