- Inspect the power converter. Some converters have an outlet plug on one end and can be plugged directly into a residential receptacle. Converters that do not have outlet plugs should have the 120 volt terminals clearly labeled.
- Connect the black, or hot, wire of the power source to one of the 120 volt terminals. Connect the white, or common, wire to the remaining 120 volt terminal.
- Look at the other side of the converter. Determine which of the 12 volt terminals is negative. This should be marked on the converter.
- Connect the negative wire of the device that the converter will power, usually a black wire, to the negative output terminal of the converter. Connect the positive wire, usually red, to the positive output terminal of the power converter.
How to Wire a 12 Volt DC to 120 Volts
In order to wire a 12 volt DC appliance into a 120 volt AC circuit, it s necessary to use a power converter. A power converter or adapter converts the incoming AC voltage into a lower DC voltage. AC adapters are widely used to allow for 12 volt DC equipment, such as car audio devices and scanners, to be plugged into a 120 volt residential power supply. Without the converter, the high voltage of the residential circuit would severely damage the 12 volt equipment.
Things You Will Need
- Do not attempt to wire a converter into a circuit with the power supply connected. This could result in serious injury and damage to equipment.
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