How to Connect an Electric Light Sensor

Written by ronald lewis
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How to Connect an Electric Light Sensor
Light sensors are easy to install. (electrical box image by jimcox40 from Fotolia.com)

Electric light sensors are designed to turn lighting on when the ambient light dims and off when the light returns. They are usually used to turn lighting on at dusk and off at dawn. The light cycles are sometimes used to enhance nighttime scenery and often used to add to nighttime security.

Skill level:
Easy

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Things you need

  • Phillips screwdriver
  • Flat-blade screwdriver
  • Diagonal cutter
  • Wire stripper
  • Mounting plate
  • Wire connectors

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Instructions

  1. 1

    Turn off the power to the circuit you are working on at the breaker box.

  2. 2

    Mount the light sensor by threading it into a mounting plate. Mounting plates are available at local hardware stores. The mounting plates are threaded and ready for mounting one to three devices.

  3. 3

    Attach the light fixture or fixtures (often flood lights) to the mounting plate. You now have the complete lighting unit assembled.

  4. 4

    Connect the wires on the lighting fixture to the wires from the electrical box. Start with the green wires. A green wire will connect either to a green screw or to a green wire from the box, using a green wire connector. This is an essential safety step to connect to ground.

  5. 5

    Connect all the white wires together and secure with a wire nut. These are the "common" or neutral wires.

  6. 6

    Connect one of the coloured wires from the light sensor (usually black or red) to the coloured wires from the light or lights.This will provide power from the light sensor to the flood lights when the light sensor activates.

  7. 7

    Connect the remaining coloured wire from the light sensor to the coloured wire from the electrical box. This will provide power to the light sensor.

  8. 8

    Attach the lighting unit to the electrical box using the hardware provided with the mounting plate.

Tips and warnings

  • Always turn off the electrical power before doing work on anything electrical.

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