Jay,
Installing a part in a "factory" doesn't make a product "ok". Would be nice,
but it doesn't work that way...
I use "UL" here .. but it can be any Nationally Recognized Testing Lab (ETL,
CSA, UL, etc....)
Any UL "Listed" product, or any UL "Recognized" part or sub-assembly must
either use components that in of themselves are also Listed and/or Recognized
to specific UL Standards, or prove during UL testing of the final product that
any uncertified component(s) used within the product being tested fully meet
the applicable Standard(s) for such parts.
Failing that, the unit in question won't qualify for Listing/Recognition, and
no UL (or equivalent lab) certification will be issued for that product by any
Nationally Recognized Testing Lab. UL. ETL. CSA. etc...
Just as all grounding components in a system must meet code, which requires the
use of agency certified parts .. use of a non-certified part as a protective
element is likely to get the system red-tagged, as Holt pointed out earlier in
this thread.
For notes .. not everyone is aware that "agency certification" refers to UL,
ETL, CSA, and a number of other OSHA-certified Nationally Recognized Testing
Labs. Product approvals from any of these labs are equivalent, though they're
not always treated as such by AHJs or others who aren't well informed on this
issue. Thankfully, the "It must be UL" attitude by AHJs and others is steadily
fading as an issue. Not gone - but fading...
Dan
--- On Sat, 8/1/09, jay peltz <j...@asis.com> wrote:
> Sure, if you install something electrical that is not UL,
> they can fail it. Even though that same part installed
> in a "factory" is OK.
>
> jay
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