Class 2
Class 2 power supplies must meet the National Electric Code (NEC) and Underwriters Laboratories (UL 1310) standards for wiring requirements and power limitations of AC/DC power supplies to minimize shock or fire risks. All Class 2 power supplies must meet the NEC overcurrent protection and wiring sizing regulations. They must be constructed with ‘In-Wall’ rated wiring for permanent installation inside walls or floors, where they may be surrounded by insulation. These wiring requirements help prevent cracking or melting of the wire, which could cause a fire hazard. These power supplies must have a maximum power capacity of 100 VA and cannot exceed a 30 VAC or 60 VDC output, minimizing the risk of electric shock or overheating from excessive currents.