CSA is writing CSA Z-462 that is scheduled to come into effect around 2008.
CEC 2-306 references Shock and Flash Hazard in the 2006 code. Appedix b refers to NFPA 70E so it is now refered in the code. Until the Canadian standard is written and adopted then 70 E has legislative force. It should be noted that many Canadian Standards are volantary and very few of them are compulsory.