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In which cable does the switch go, power or ground?
I installed some neon lights on my room, using an ac adapter. I connected every positive with positive cables and negative with negative cables. I want to add a switch to it but I have doubt on where should the switch go in the red wire (power) or black (ground). The adapter has an input of 120 vac 60hz and the output of 12vdc.
The neon lights run on 12v.
Or is there is another way to power up the lights?
2 Answers
- 1 decade agoFavorite Answer
The switch can go into either wire and work but there are two trains of thought here. If you put it on the positive side the downstream wire and load will always be dead when the switch is off. This is the preferred way of wiring a simple circuit.
With sensitive electronics that can be damaged by voltage surges or spikes, switches are used on the negative or ground side leaving the components charged or hot all the time.
