Which of the following is a certification mark that could appear on a wiring device?

• A. NCAA
• B. UAW
• C. CSA
• D. None of the above

Answer: (C)

Certification marks show that a product has been tested and meets recognized safety standards by an independent body. On wiring devices, the CSA mark from the Canadian Standards Association is a common certification mark that indicates the device complies with safety requirements. The other names listed are not certification marks for electrical equipment—NCAA is a college athletics association and UAW is a labor union—so they wouldn’t appear as official safety marks on wiring devices. Hence, the CSA mark is the correct certification mark that could appear.