Need to correct some stuff. Class 2 (arabic numeral) is for limited power sources, regardless of construction class. Class II (roman numeral) indicates a cons

Need to correct some stuff. Class 2 (arabic numeral) is for limited power sources, regardless of construction class. Class II (roman numeral) indicates a construction class where safety cannot be dependent on a ground bond. Class I (roman numeral) indicates safety is dependent on a reliable ground bound. Class I equipment, depending on the scoped end-use equipment safety standard, can have up to 25mA of leakage. Class II equipment, depending on the end-use environment, can be limited to 0.25mA of available touch leakage. A good reference for Class 2 and 3 equipment is the UL5085-x series (same as CSA No66.x). For the EU, there are no harmonized standards in the Low Voltage Directive that have an equivalent Class 2/3 construction, although there are several safety standards that address requirements for 'inherently limited' power sources.