What Do The 3 Wires (red, Black & White) Connect To When Wiring A Photoelectric Cell And Light?


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Mark Cady answered
Black is power. This is supply power, always on.
White is neutral, connect it to other neutrals.
Red is the switch lead, this will connect to the device you want to control.
The device usually has a white & a black or colored wire.
The white is connected to the white of the photo cell & must also have a connection with the neutral. Usually all the neutrals/whites are grouped together with other neutrals from other devices.
The black or colored wire of the device is the load & is connected to the red of the photo cell.

Power arrives to the photo cell on the black wire[line]. When the photo cell is no longer gathering light it switches the power arriving on the black wire to the red wire [load]

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