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Single-Wire Transmission Line
It uses a single conductor line instead of a pair of wires to transmit power or signals.
This is different from single-wire earth return (SWER), which relies on earth as a conductor.
Commercial Applications are unknown.
Nikola Tesla spoke about this.
Related
- Single-Wire Earth Return
- Avoids neutral wire
- Ground and Neutral Wires
- GND (Ground) / COM (Common): A reference point, usually taken to be 0V
- Neutral (The return wire)
- Live Wire, Neutral Wire and Earth Wire
- Red (Live Wire): Taken as having voltage
- Black (Neutral Wire): Return wire, taken as 0V
- Green (Earth Wire): Wire to Mother Earth, either from appliance, or from neutral wire (Teachoo article said Mother Earth XD)
- Grounding is done both at home and at the transformer - those are the two grounds
Neutral Wire is safe to touch because it is near the 0V point (so the circuit gradient makes it 0V near that point) - But don't test it too much. The differences maybe higher if the wire isn't close to GND.
- Electric Wire Colour Schemes (US)
- DC
- Red: Live
- Black: Neutral
- Ground: White or Grey
- AC
- Phase 1: Black (India: Brown)
- Phase 2: Red (India: Black)
- Phase 3: Blue (India: Red)
- Neutral: White (India: Blue)
- Ground: Green or Yellow Striped Green (India: Green)
- High Voltage AC
- Phase 1: Brown
- Phase 2: Orange
- Phase 3: Yellow
- Neutral: Grey
- Ground: Green
- DC
Home connections are 1 phase, industrial is 3 phase. A phase and neutral is used to power a simple circuit.
In Serbia, households use 3 phase power as it reduces the amount of current a single wire would carry. It helps give voltage stability as well, by not overloading a single line.
- Earthing and Grounding
- Earthing: Connecting Circuit to the Earthing System
- Grounding: Connecting the Earthing System to the Earth.