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NEMA standardization minimizes risk by guaranteeing uniformity in voltage, phase, style and amperage. The first number in the NEMA design represents the fashion, and L means that the plug or connector is locked to prevent accidental pulling out. This number is indicative of the power that they are capable of managing in terms of amps and voltage. It is important to ensure that the device is compatible with the voltage and amperage requirements of the cord prior to plugging it into your laptop. This is your configuration number, which designates specific uses.

The configurations that are used in NEMA straight blade cords are different depending on the device which include fans, lamps and speakers or larger appliances such as refrigerators, washers, motors, and dryers. Amperage is indicated by the two-digit number following the dash on NEMA’s configuration. The final character of the configuration is the model of the device to facilitate recognition. The plug is P. and the connector’s code is C and the receptacle’s name is R.

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