Below are many of the safety definitions that are found on most Canadian and US safety footwear. As you will read, Canadian CSA standards exceed the ANSII.

ESR /EH
Electric shock resistant ESR footwear is designed to be used on job sites where acccidental contact with electrically charged items may occur. ESR footwear is designed to be an insulator or non-conductive allowing no electricity to escape should a person come in contact with an electrically charged object. CSA standards require the outsole of a boot or shoe to withstand, under dry conditions, a test of 18 KV 60 Hz for a period of one minute without disruptive discharge to ground and the leakage shall not exceed 1 MA.
The ESR test for CSA is 18KV, and for ANSII is 14 KV.

Steel Toe
CSA grade 1 steel toe impact requires a 93 ft.lb. (125 joules) drops test. ANSII requires 75 lbs (101.7 joules) and a compression test of 2500 lbs (11 121 N)