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CSA marks on double-insulated electric tools

Summary A power-tool company asked whether a Canadian Standards Association mark could show compliance for double-insulated portable electric tools. OSHA said CSA was a nationally recognized testing laboratory for that equipment and that its mark could be used under the cited rule, but only for the conditions covered by the testing approval.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1995-09-01
Date issued
September 1, 1995
Status
Active
Status last verified October 9, 2026
Topics
Workplace Safety OSHA 1910 Electrical Safety Power Tools
Source
View the official document

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About this page: The full text below is the official document from Occupational Safety and Health Administration (OSHA). Ezel adds the plain-English summary and tracks the document's status. The official source linked on this page is authoritative for any reliance.

September 1, 1995
Raymond J. Callahan
S-B Power Tool Company
[Recipient address omitted]
Dear Mr. Callahan:
This is in response to your August 16, 1995, letter regarding the Canadian Standards Association (CSA), a nationally recognized testing laboratory, marking and double insulated tools.
The Canadian Standards Association is a nationally recognized testing laboratory for portable electric power tools and double insulating mechanisms. The CSA marking on double insulated tools can be used for compliance with the requirements of Subpart S, of OSHA 1910. As with any approval, the marking and certification applies only to the conditions of use as specified in the testing protocol.
Enclosed is a listing of nationally recognized testing laboratories. Should you have further questions, please do not hesitate to call Ron Davies at (202) 219-8031.
Sincerely,
John B. Miles, Jr., Director
Directorate of Compliance Programs

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