The designation of Class 2 is vital when installing an electrical system in building project. Class 2 led drivers regulations state the wiring requirements between the output of the drivers and the input of the load , such as wire size and insulation, wire derating factors, over current protection limits and ways of wiring installation . The limited output voltage and output power delivery capabilities of Class 2 led drivers are recognized to be the lower risk to cause the fire and electrical shocks, hence allow lower cost wiring methods to be used.

The IEC protection grade dictate the construction and insulation of LED power supplies to protect the user from electrical shock. For class 2 led power supply, there are two layers of insulation or a single layer of reinforced insulation, the first layer of insulation is typically called as “Basic Insulation,” the second layer of insulation is often an insulating case enclosing the supply, the plastic case present on wall or the desktop type power supplies.