Installation manual

38 031-171-C0-003 Rev. C
®
USC
®
NRTL/C
®
CUS
CSA International (CSA) was established in 1919 as an independent testing laboratory
in Canada. In 1994, OSHA granted CSA Nationally Recognized Testing Laboratory
(NRTL) status in the United States of America. This was extended in 1999. The specific
notifications were posted on OSHA’s official Web site as follows:
www.osha-slc.gov/fedreg_osha_data/fed19940809.html
www.osha-slc.gov/fedreg_osha_data/fed19991104.html
When these marks appear with the indicator “C and US” or “NRTL/C” it means that the
product is certified for both the U.S. and Canadian markets to the applicable U.S. and
Canadian standards.(1)
Argus Rectifier and Power System products bearing the CSA NRTL/C Mark are
certified to CSA C22.2 No. 950 and UL 1950.
As part of the reciprocal U.S./Canada agreement regarding testing laboratories,
Standards Council granted Underwriters Laboratories (UL) authority to certify products
manufactured in the U.S. for sale in Canada.
Only Underwriters Laboratories may grant a license for the use of this mark which
indicates compliance with both Canadian and U.S. requirements.(2)
What are NRTLs and what do they do?
NRTL’s are third party organizations recognized by OSHA, U.S. Department of Labor under the NRTL
Program.
The testing and certifications are based on product safety standards developed by the U.S.-based standards
developing organizations and often issued by ANSI.(3)
The NRTL determines that a product meets the requirements of an appropriate consensus based product
safety standard either by successfully testing the product itself, or by verifying that a contract laboratory
®
NRTL/C
®
NRTL
Program
OSHA
15 Others
Dec. 17, 1998
has done so, and the NRTL certifies that the product meets the
requirements of the product safety standard.(4)
When was the NRTL started, and who governs it?
In 1983, in a suit brought on by an independent testing laboratory,
OSHA was court ordered to remove specific references to UL
(Underwriters Laboratories) and FRMC (Factory Mutual Research
Corporation).
In 1988, OSHA revised its regulations to remove those references
and the NRTL program was established.
The NRTL program is both national and international in scope with
foreign labs permitted. As of Dec. 17, 1998, 17 recognized labs were
permitted, with pending applications from 21 other labs.(5)
References:
Information presented has been developed from the official web sites of the respective organizations. Specific
references are as follows:
(1) www.csa-international.org/english/product_services/index_cert.htm
(2) www.ul.com/mark/ulmark.htm
(3) www.osha-slc.gov/dts/otpca/nrtl/slide02.html
(4) www.osha-slc.gov/dts/optca/nrtl/slide04.html
(5) www.osha-slc.gov/dts/optca/nrtl/slide18.html
A CSA Marks
4.0 Appendix