In America, organizations are accredited by the Occupational Safety and Health Administration (OSHA) as Nationally Recognized Testing Laboratories (NRTLs) to test and certify electric and gas products to the applicable U.S. standards and codes. Because these NRTLs meet the same qualifications and use the same standards, their certification marks are regarded as equivalent by regulatory authorities. Thus, the CSA mark and other qualified marks are considered to be equivalent.
In Canada the situation is similar: testing and certification organizations are accredited by the Standards Council of Canada (SCC) and these organizations evaluate products to the same Canadian standards and codes.