19. Applications of Switch

Question.9

The image shows a standard household switchboard commonly used to turn lights or fans ON and OFF in a room.

What is the electrical type of a standard home light switch that controls one light from one location?

SPST (Single Pole Single Throw): It has two terminals and simply ON and OFF the equipment.
SPDT (Single Pole Double Throw): It has three terminals and is used for "2-way" stair lighting.
DPST (Double Pole Single Throw): It disconnects both the Phase and Neutral wires at the same time.
DPDT (Double Pole Double Throw): It is used to reverse the direction of a ceiling fan motor.

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