Wiring Diagram Switch Loop. One cable LNE either from the mains board or the last ceiling rose one cable LNE out to the next ceiling rose and one cable LSL. A switch loop single-pole switches light dimmer and a few choices for wiring a outlet switch combo device.
1 Common loop-in wiring 1A - This is the most common loop-in wiring arrangement you are likely to see. If your model railroad uses a conventional DC Direct Current power supply adding a reverse loop is only a toggle switch away. In this case the fan and light must be set to a desired mode using a pull chainchains or wireless remote and then the switch is used to turn the entire fixture on or off.
This circuit diagram shows the wiring for a new receptacle outlet connected at an existing light fixture where the source hot is at the ceiling box.
The source neutral wire on the receptacle is removed and spliced to the white wire running to the switch and to a pigtail back to the receptacle neutral. In this video I explain what a switch loop is and how it works. This circuit diagram shows the wiring for a new receptacle outlet connected at an existing light fixture where the source hot is at the ceiling box. 1 Common loop-in wiring 1A - This is the most common loop-in wiring arrangement you are likely to see.
