Leg refers to a hot conductor in an electrical system. Using legs is widely common in the USA and Canada, in both residential and commercial services.
Can I use a neutral as a switch leg?
Ordinary mechanical switches do not need a neutral, but only hots (line hot and switched hot). Nowadays the code requires a neutral in switch boxes even if it is not used in the original installation.
What is the purpose of a switch leg?
The switch-leg portion of electrical circuits controls the flow of electricity to lights or receptacles. The type of circuit wired for a switch depends on where electricity is delivered to the circuit: at a switch or at the light or receptacle.
What is a switch drop?
well its only a vernacular phrase so no formal definition in the standards, but we normally mean “the route the cable takes from light fitting or controller,( usually high up), to the switch, (normally at a level below it).
What color is the switch leg?
Black wires can also be used as “switch legs” that connect wall switches outlets and appliances (like ceiling fans or lights), and become energized when the switch is turned on.
What is a leg on a circuit breaker?
In most panels, the breaker slots on each side of the panel alternate between the hot bus bars (legs). If two single-pole breakers are on the same side and are stacked one on top of the other, they will connect to different legs.
What is a leg on a breaker?
leg-breaker (plural leg-breakers) (chiefly US, slang) A violent thug, especially one employed as an enforcer by a criminal organization.
How do I wire a receptacle from a light outlet but keep it hot when light is off?
In this case, you must change the cable from the switch to the light outlet from a 2-wire to a 3-wire cable. As you can see, connecting a receptacle to the light would see the receptacle only hot when the light switch is on.
Does a switch leg need to be grounded?
404.9 (B) Exception.
If you were installing a new switch, you would be required to provide an equipment grounding conductor at the outlet. And the switch would have to be properly grounded, in accordance with the National Electrical Code (NEC).
Is a switch loop legal?
At the fixture end, one of the 2 wires the switch is connected to would be connected to the source of power (black on the other cables) and the other is connected to the hot screw of the light fixture. A switch loop wired properly is legal.
Can I use a white wire as a hot?
Even though you are permitted to use a white wire as a hot wire by marking it with electrical tape, the opposite is not recommended or allowed. In other words, do not use a black wire as a neutral or ground wire, or for any purpose other than for carrying live electrical loads.
What is a switch leg drop?
Two Common Methods for Wiring a Light Switch
One method is to bring the power supply in to the light fixture outlet box, and then use what is called a “switch-leg drop” to the switch box, and the other way is to bring power in to the switch box, and then run the “switched” cable up to the light or lights.
Why would a black and white wire be together?
Why are black and white wires connected together in the switch outlet? If you see both sides connected together, it means it’s a switch loop. The white wire that’s connected to the black wire carries power to the switch. And the black wire that’s in the same cable carries back that switched power to the outlet.
What causes a switching loop?
A switching loop or bridge loop occurs in computer networks when there is more than one layer 2 path between two endpoints (e.g. multiple connections between two network switches or two ports on the same switch connected to each other).
