To control a lamp independently using a Single Pole Single Throw (SPST) switch, connect one terminal of the switch to the live wire from the power source and the other terminal to the lamp's live input. The neutral wire from the power source should be directly connected to the lamp's neutral input. When the SPST switch is in the "on" position, it completes the circuit, allowing current to flow to the lamp and turn it on; when in the "off" position, it breaks the circuit, turning the lamp off.
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