There are two sets of regulations: one for domestic equipment and one for
work place equipment. 

Domestic: There are no federal laws except that the product must be safe.
Some states (e.g. Maryland), counties (e.g., Orange, CA) and cities (e.g.,
San Francisco) have laws that require products to be Listed. Products that
are permanently wired into the building must also comply with the local
electrical code which is most likely built upon the National Electrical
Code. Some local codes have additional provisions - e.g., cities along the
west coast have requirements for resistance to earthquakes. The electrical
code requires the item to be Listed or accepted by the inspector - don't
rely on the later.

Work place: OSHA and the local electrical codes govern equipment in the work
place. OSHA regulations govern pluggable and permanent equipment and the
electrical code governs permanent equipment. The OSHA regulations are build
upon an earlier version of the National Electrical Code. OSHA basically
requires the equipment to be Listed, but there is a technical way out of
that which is not recommended.
Again, the electrical code requires the equipment to be Listed or accepted
by the electrical inspector.

Lastly, the fire insurance companies may have a say. The contract with their
customer may require that all electrical equipment be Listed.

Adding all of this up, it is accepted by most that Listing is an absolute
requirement in the United States. Having said that, there is one set of
equipment that does not require Listing - i.e., equipment that operates from
a Class 2 power source per Section 725 of the National Electrical Code.

Richard Woods

        ----------
        From:  [email protected]
[SMTP:[email protected]]
        Sent:  Thursday, November 18, 1999 8:36 AM
        To:  [email protected]
        Subject:  Regulatory safety Requirements for the US


        Group,
            Forgive me if this subject has been covered before but I am
finding it very
        hard to determine the EXACT regulatory requirements for the states.
As far as I
        understand it is the responsibility of the installer or business
using
        electrical equipment to ensure that it satisfies the requirements of
the
        national wiring code and OSHA. To do this recognition or listing by
an NRTL is
        required. Is it correct to assume that as manufacturers there is no
mandate that
        equipment must be recognised by an NRTL although the customer will
almost
        certainly want this to forfil his obligations.

        I am just trying to get a definitive statement on what is mandated
by law (and
        which law mandates it) and what is standard practice for safety
compliance in
        the US. As a general rule all equipment we ship to the states is UL
listed but
        this question keeps getting circulated and asked to me why do we
need to do
        this. My answer is that it is the responsible thing to do and that
it proves due
        diligence, although I am sure that there is a legal reason behind
this. It just
        seems a bit of a hazy issue and one that I would like to get a
definitive answer
        on.
        Many thanks in advance,
                    Duncan.


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