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(LIFE SAFETY WARNING! [disclaimer]

=== === Electricity is dangerous!

You can be injured or killed!

Improper installations can cause fire, injury and death!

Should you be doing this yourself?)

This is one of those questions - if you know this little, you shouldn't be doing what you are planning...

No disrespect intended, but this is SO basic that it suggests you have not studied the subject at all!

There are many good reference books and course books to study from.

<><><> It is allowed to have more than two sets of conductors [cables] in an enclosure or box.

There are very precisely defined limitations on exactly how many individual conductors are allowed in a box. These depend on conductor gauge, box volume and number of devices installed.

The proper practice is to select the box based on circuit requirements.

If you are using 14 gauge wire, it is required to allow 2 cubic inches per conductor entering the box, with the exception of the grounds, which together count as one conductor. For 12 gauge, allow 2.25 cubic inches per conductor.

Cables clamps each count as 1 conductor, as do devices, measured at 1 conductor per device yoke.

Support fittings, as in some ceiling boxes, count as an additional conductor.

In a switch box with 14 gauge wire, assuming 2 cable clamps, when you have three cables and a switch, there will be 2 conductors for the clamps, one conductor for the switch, three whites, three blacks [unless you use three wire, then you have to add the reds!] and 1 conductors for the grounds. That makes a total of ten conductors.

This makes a volume requirement of 20 cubic inches for the box this switch is to be installed in.

Also, remember that it is not allowed to put two wires under a screw, so it will be necessary to pig-tail the conductors.

It is also required that the wires be left at least six inches long where they enter the box. I always find some hero who tried to save space by cutting the wire 3 inches long. Try and fix THAT when it burns up!

<><><>

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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โˆ™ 2009-07-25 11:20:45
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Q: Would it be okay to have 3 hot wires on the back of a switch to complete the light and run power to the rest of the circuit?
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Related questions

Why will a light bulb not light in a complete circuit?

It will light up in a complete circuit if the switch is closed but if the switch if open the energy will not completely pass because it is open


What is the function of the switch in the circuit?

A switch simply opens a circuit, stopping the flow of electricity. For example: a simple circuit would be two wires from a battery, one of which goes to a switch, and the other goes to a light bulb. A third wire goes from the other side of the switch to the other conductor of the light bulb. With the switch closed the circuit is complete and the light goes on. Open the switch and the circuit is broken and the light goes off.


What is the function of switch in the circuit?

A switch simply opens a circuit, stopping the flow of electricity. For example: a simple circuit would be two wires from a battery, one of which goes to a switch, and the other goes to a light bulb. A third wire goes from the other side of the switch to the other conductor of the light bulb. With the switch closed the circuit is complete and the light goes on. Open the switch and the circuit is broken and the light goes off.


What happens to an electric current at a light switch?

When an electrical switch is in the off position, the circuit is interrupted. When the switch is on, the circuit is open and complete.


When you flip a switch to turn on a light you?

Complete the conducting circuit


Why does a circuit need to be complete to work?

Without a completed circuit current will not flow. An open circuit would be represented by a room switch in the off position and the light fixture off. Turn the light switch on, current flows and the fixture turns on.


Why does a light switch turn on your lights?

A light switch turns on lights because when flipped, it completes a complete circuit.


Where does the cuurent go when you switch the light switch off?

Nowhere. That's why the light goes out. Switching a light switch off breaks the circuit, and without a complete circuit, no electricity flows through the lamp.


When a circut is closed it means what?

There is a complete path for the electricity to flow. The opposite of an open circuit. If a light switch is on and the light comes on, the circuit is closed. If the switch is turned off, the light goes off because the circuit is open.


When you flip a switch to turn on the light you?

Either close the circuit, or complete the circuit, should work here.


How does circuit stop flowing when light bulb switch is off?

The simplist answers is that electricity needs to complete a circuit fully. It stops flowing because there is no complete circuit. The switch is a device for opening and closing the circuit. When the switch is in the off position the circuit is said to be open and electricity cannot flow.


How a light bulb works in a complete circuit?

A Light bulb lights in a complete circuit because then the electricity from the battery can travel round the wire that has no breaks. BUT the switch has to be close. Z


What happens when a switch circuit is opened?

When a light switch is opened the circuit is broken and the light goes out.


What happens when you switch the light switch on or off?

When the light switch is turned on and a light bulb is connected in the circuit a current will flow through the circuit. Likewise when the switch is opened, the current will stop flowing in the circuit.


What are the four parts to make a complete circuit?

The four parts of a complete circuit are: - the load (often a light bulb) - the power source (often a battery) - the switch - the wires


How do you power an outlet from a one wire light switch on same wall?

The one wire carries the electricity or voltage. The lamp is grounded completing the circuit. You don't. The light switch is only half the circuit, a lamp has nothing to ground to so it can not work. If the wire to the switch is 3 wire, the bare wire would complete the circuit and power the plug, but it would not be up to code and could present a fire hazzard.


What would happen if you stuck an insulator in the middle of a circuit?

the circuit would not be complete. the lightbulb would not light or the buzzer would not buzz


What happens when the circuit is complete and the switches are closed?

*Look at the simple circuit illustrated in Figure A-2. What will happen when only switch S1 is closed? Correct Answer= "Nothing will happen-the light bulb won't light up." &lt;&lt;&gt;&gt; If there is a load in the circuit the load will operate. If there is no load in the circuit and it is complete then a short circuit will occur and something in the circuit will burn open. If the circuit is complete and there is a fuse or breaker in the circuit, then the fuse or breaker will open the circuit.


What is an open elecrical circuit?

An open circuit is one where the current is not able to complete the circuit. An example could be a light bulb connected to power but switched off, the circuit being broken by the switch, and considered "open." When flipping the switch On, it connects the power and the circuit is then closed.


What does it mean when the circuit is opened?

Its means there is no continuity between point Ato point B. Ex. A light switch : When the switch is off it opens the circuit and electricity does not get to the light, when the switch is on the circuit is closed and the light will turn on.


When you turn on a light switch you an open circuit. What goes in the blank?

When you turn on a light switch you do not have an open circuit.


Is a light bulb a complete circuit?

no, it is not a complete circuit. to be a complete circuit there has to be four wires, a bulb and a cell (battery).


Why do you use switches in circuits?

A switch in a circuit will quickly allow you to break the circuit, without changing the wiring. For example, a light switch. By turning a light switch off, you are breaking the circuit and, thus, turning the light off.


Why the bulb is not lighting when one wire or terminal is not connected?

When one wire or terminal is not connected to a light bulb, it is not possible for electricity to complete the circuit. When a circuit is not completed, the bulb will not light. An off switch, for example, breaks the circuit.


What is a closed circuit and an open circuit?

a closed circuit is a complete circuit with no breaks at all, one example:- a closed circuit occurs when you turn the light switch on an open circuit has a physical break in the circuit, which stops the flow of electrons. one example is when the lights are turned off, the switch creates a physical break in the circuit