3 pole switch with 2 wires

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You can do it but you'll need to re-mark one of the neutrals as a "hot". Use one of the blacks as the heater, and its partner neutral as the proper neutral for all devices. Use the hot and re-marked neutral in the other bundle for fan and light.

The issue, anytime the neutral does not down the same cable as the hot, is the cables need to be run very tightly together. Anywhere there is distance between them, the gap becomes the core of a transformer and suffers inductive heating in proportion to the current flowed. Since the heater takes the lion's share of current, I suggest running its hot with the shared neutral.

This issue would have been solved if you had used 12/4 or 12/2/2 wire. You would need to go to a proper electrical supply house for that, but that's a good idea anyway since their prices on everything are often...

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This light switch wiring diagram page will help you to master one of the most basic

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Circuit by placing it between the hot line and the common terminal on three way switch a or between the common terminal and the fixture on switch b

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Double light switch wiring...

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Your question is not quite clear.

First, I will assume that you want the fan and light to go on and the night light to go off. With the switch in the other position, I suspect you want the fan and light off and the night light on. This would be logical.

However, it sounds like your fan, light, and night light all go on and off together. I will assume this is the case.

One of the wires you describe is the power wire. It will remain hot regardless of the switch position. The other wire goes to the fan, light, and night light (I assume). It would be connected to the other switch terminal.

Unless you can locate the power wires for the night light, it can only do what the other two loads do. If you do locate it, you will have to run hot (black), neutral (white), and copper (ground) to the junction box containing the other wires.

Your three-way switch has three contacts. Two are the switch points and one is common. Connect the hot (black) wire to the common...

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1

Wire the common terminals for each switch. Connect the black wire from the power source to the common terminal of the first switch. Connect the black wire from the new cable to the common terminal on the second switch.

2

Connect the white travelers. Connect the white wire at each end of the new cable to the travel terminal on the right side of the switch. Mark this wire with black tape to indicate that it is "hot" (white wires usually aren't).

3

Connect the red travelers. Connect the red travelers to the left traveler terminals on each switch.

4

Attach the ground wire on the second switch. Use the ground wire from the new cable.

5

Connect the old white wire to the existing cable headed to the light. When you pulled out your old switch, there was a white wire attached. Connect this white wire to the white wire that is connected to the light. Use a wire nut to connect them. Consult your local...

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There is a way to wire a light fixture controlled with two 3-way switches using only 14-2 cable. Run a length of 14-2 cable from each 3-way switch to the light fixture and a third one between the switches to act as travelers. This is not an optimum method for wiring this arrangement, but it is possible in a pinch, if no 14-3 cable is available. This method leaves an unused conductor in each of the cables linking the light fixture to a switch, each of which must be tied to ground at both ends to indicate they are not carrying current. The conductors that are used must conform to the color convention for hot and neutral conductors, and any white conductors that are hot must be wrapped in red or black tape.

It's important to remember that the travelers and switches must always be situated between the hot electrode of the power source and the load (light fixture), to prevent any of the wires in the light fixture from being live when the switches are off (no current flowing...

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Larger image

1 switch and 2 lights


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Review: Basic 120V and 240V wiring

120Volt circuit requires 2 wires to complete circuit
120Volt requires Hot and Neutral
When installing a switch, the Hot wire is cut, and switch installed.
Switches always turn the Hot wire on-off.

Neutral wires are never connected to switch
Only the hot wire is turned on-off. The neutral is always continuous between Load and breaker box

240Volt circuit also requires 2 wires to complete circuit
240Volt requires Hot1 and Hot2.
No Neutral wire is involved in 240Volt circuit
Read more
240Volt circuit can be turned on-off by cutting power to either Hot1 or Hot2
Double-pole Switches can turn both Hot wires on-off.

Resources:
Electricity from pole to breaker box
How to replace circuit breaker
How to select wire size and breaker size
Maximum 12 boxes per 120volt circuit

3-way switches - ...
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–Check local regulations for restrictions and permit requirements before beginning electrical work–

This page contains wiring diagrams for household light switches and includes a switch loop, single-pole switches, light dimmer, and a few choices for wiring a combo switch/outlet device. Also included are wiring arrangements for multiple light fixtures controlled by one switch, and a split receptacle controlled by two switches.

Wiring a Switch Loop

When the electrical source originates at a light fixture and it's controlled from a remote location, a switch loop is used. The circuit pictured here is wired with 2-conductor cable running from the light to the switch location. The white cable wire in this switch loop is wrapped with black tape and connected to the bottom terminal on SW1 and the hot source at the light. The black wire is connected to the top terminal on SW1 and the hot terminal on the light fixture. The neutral from the source is connected directly...

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[Summary]3-Way Switches 3- way switches are used to control lights with two switches. These switches do not have an on/off position like single pole switches. It is important to understand how these are wired before attempting to troubleshoot or replace. The

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3-Way Switches

3- way switches are used to control lights with two switches. These switches do not have an on/off position like single pole switches. It is important to understand how these are wired before attempting to troubleshoot or replace.

The diagrams below show the conventional wiring for 3- way switches. Unfortunately, not all 3- way switches are wired the conventional way. See Alternate 3- Way Switch Wiring Configuration for another way 3- way switches may be wired.

Wiring a 3-Way Switch

How to wire a 3-Way switch. Wiring a 3-way switch is a little more tricky than wiring a 2-way switch. First of all we need to go over a little basic...

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A double pole single throw (DPST) switch controls the connections to two wires at once, where each wire only has one possible connection. In other words, it's like two simple switches controlled by a single actuator. The DPST switch often appears in circuit breakers, where it is used for 240-volt circuits, with each pole carrying 120 volts separately. It can also be used at home to completely disconnect a circuit from its electrical power source by controlling the hot and neutral wires at once, eliminating all possible paths between the disconnected area and the power supply. DPST switches are also sometimes used to control parallel-wired lights or machines...

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Posted on Oct 16, 2017 by UdugsTech in 3

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3 Pole Switch Schematic

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3 Pole Light Switch

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How to replace a single pole switch.

This is a fairly simple thing to do with only a few things to keep in mind.

1) Turn the power off to the circuit.
2) Double check that the power is off.
3) Remove cover plate.
4) Remove existing switch from the box while keeping the wires attached.
5) If it is a single pole switch you should have 3 wires connected to it, the feed, the switch leg and the ground.
6) Remove wires from existing switch and connect them to the new switch.
7) Install the new switch back into the box.
8) Replace the cover plate.
9) Turn the power back on.
10) Test your work.

Installing a new light and switch.

1) Determine the current for the circuit, that will determine what size cable you will use.

2) Run your feed cable from the electrical panel to your switch location.

3) Run your switch cable from the switch location to the light fixture or...

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Level of difficulty: Advanced
Three-way switches control lights and receptacles from two points: for example, a light in a hallway that can be operated from the first floor and second floor. Or, a light in a garage that can be turned on/off from the garage and the kitchen or pantry, etc. What you need for light switch installation:
Three-way switch Three-way cable with another for ground wire (four total) Terminal screws No.12 wire Lineman's pliers or hacksaw Sharp knife or slitting tool Wire strippers Hand brace Drill with long auger electrician's bit Coil of electrician's fish wire Grounding screws Black tape

Three-way switches require a three-wire cable: the power wire, the neutral wire, and the traveller or switch wire.

The cable should also have a ground wire, or a total of four wires in the cable. The system also requires three-way switches. The switches are wider than regular single-pole switches and they have three terminal screws on the side...

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