Standards
National Electric Code (NEC)
http://www.nfpa.org/
The NEC creates standards and codes for several industries in the US, and is part of the National Fire Protection Association (NFPA).
CSA International (CSA)
http://www.csa-international.org/
CSA standards are Canadian standards from CSA International. Products certified by CSA international have the “CSA” mark.
Underwriters Laboratories (UL)
http://www.ul.com/
UL standards are from Underwriters Laboratories, which is a non-profit testing organization. When a cable is given a UL rating, it has been approved for use in the US. For Canada, a cUL or ULC rating is given.
Insulated Cable Engineers Association (ICEA)
http://www.icea.net/
The ICEA is a non-profit organization and creates standards for the electrical, control and telecommunications industries.