The National Electric Code® (NEC) requires that low voltage power supplies and electrical wiring be Class 2 compliant. If you are creating new construction or adding major modifications, you will most likely require an inspection. The requirements in the standard apply to cord-connected and direct plug-in products with a maximum input power of 660W. According to the standard's page, covered products are intended to provide. . As defined in the Code of Federal Regulations (CFR), "external power supply" means an external power supply circuit that is used to convert household electric current into DC current or lower-voltage AC current to operate a consumer product.
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Should I use a Class 2 power supply?
One advantage of using a Class 2 power supply is that if you have any devices that are not UL Approved and these devices are connected to a Class 2 source, UL typically does not require additional testing. PULS has one of the largest selections of NEC Class 2 power supplies and other DC power solutions.
Can a power supply be 100% loaded?
Power supplies that comply with 61010-2-201 can be 100% loaded, eliminating the need for 50% derating. Power supplies compliant with the 61010 standard and servicing NEC class 2 circuits must also satisfy NEC Class 2 requirements.
Can a DC power supply meet a Class 2 circuit requirement?
Due to the voltage limits of class 2, only the load side of a DC power supply can meet the class 2 circuit requirements. The following technical note describes the requirements of a Class 2 power supply. Using the SDP4-24-100 as an example, the detailed application and fulfillment of the NEC requirements for Class 2 power sources is portrayed.
What is a Class 2 certified power supply?
Class 2 Certified power supplies and over-current circuit protectors that achieve and uphold that requisite must do so throughout their power source's full nominal operating ranges.
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