UL Question Corner UL Develops Canadian White Book White by jordanbetts


									                                          UL Question Corner

            UL Develops Canadian
                White Book
                                                                                  White Book is to enable an AHJ to
                                                                                  look at the UL Mark on the prod-
                                                                                  uct and cross-reference the product
                                                                                  identity from the UL Mark to the
                                                                                  index in the White Book and locate
                                                                                  the Guide Information and scope
                                                                                  of Listing for the specific product
                                                                                      The White Book has been printed
                                                                                  annually for over 30 years. For many,
                                                                                  it is considered part 2 of the Code,
                                                                                  because without the information in
                                                                                  the White Book it is difficult to de-
                                                                                  termine compliance with the Code.
                                                                                      Until now, UL has not printed
                                                                                  a Canadian White Book. Starting
                                                                                  in 2007, UL in coordination with
                                                                                  ULC (Underwriter’s Laboratories
                                                                                  of Canada) will print the Canadian
                                                                                  White Book. The Canadian White
                                                                                  Book will contain the Guide Infor-
                                                                                  mation and scopes of all Canadian
                                                                                  certified product categories from UL
                                                                                  and ULC that are applicable to any
                                                                                  discipline inspector, not only electri-
                                                                                  cal product categories as is done for
                                                                                  the UL White Book.
                                                                                      Besides incorporating the prod-
                                                                                  uct categories for Canadian certified
                                                                                  products of ULC and UL, the Cana-
                                                                                  dian White Book will also contain a
         I have read many times in the   and others to verify the Listing scope   detailed explanation of how to use
         UL Question Corner column       of UL Listed electrical products in-     the book titled, “Practical Applica-
         references to the UL White      stalled in the field. The Guide Infor-   tion of the Canadian White Book in
         Book. I am a Canadian elec-     mation for each UL product catego-       the Field.” In addition, Appendix A
trical inspector and want to know        ry details the scope of the Listing,     and B, will contain a Quick Guide
what is the UL White Book and is         important installation and mark-         to using ULC’s and UL’s Online
there a UL White Book for Canada?        ing information, identification of       Certification Directory so that you
                                         the standard or other requirements       can easily search the online databas-
         The UL White Book is a          used for Listing as well as how to       es for verifying certifications.
         regulatory reference tool       identify products Listed under the           The Canadian White Book will
         that UL provides to AHJs        product category. The intent of the      be available the first week in July.

36 IAEI NEWS July.August 2007                                                                                www.iaei.org
                                                 UL Question Corner

You can obtain a copy by contact-
ing us at ulregulatoryservices@
us.ul.com or for a PDF version of
the Canadian White Book you
can download it at www.ul.com/
regulators/2007CanadianW hite

        I was told that I could not
       plug one extension cord
       into another on a con-
       struction site. The NEC
does not seem to prohibit this
practice. Where do I find such

         UL Lists what every one
         knows as “extension cords”
         as cord sets under the prod-
uct category Cord Sets and Power
Supply Cords (ELBZ), located on
page 65 in the 2006 UL White
Book or online at www.ul.com/da-
tabase and enter ELBZ at the Cat-
egory Code search. Cord sets and
power supply cords are evaluated
for compliance with the Standard
for Safety for Cord Sets and Power
Supply Cords, UL 817.
    Plugging one cord set into an-
other is what many refer to as “daisy
chaining.” Daisy chaining increas-
es the likelihood of misuse, exces-
sive voltage drop and overloading
the extension cord and may create
a fire or shock hazard, therefore,
UL 817 requires that cord sets be
provided with a tag label that iden-
tifies the dos and don’ts of using
an extension cord to avoid danger-
ous hazards. One of the markings
required on that tag states, “Do
not plug one extension cord into
another.” So that, if one extension
cord is plugged into another it is a
violation of NEC 110.3(B) because
the cord set would not be installed
in accordance with the Listing in-
stallation markings.

www.iaei.org                            July.August 2007 IAEI NEWS   37

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