# Question: Can 2 Circuits Share Neutral Wire?

## Can you use 12 3 wire lights?

The red on a 12-3 is used for three-way light switches which are covered later.

12 gauge Romex is rated for 20 Amps and is commonly yellow jacketed.

To determine exactly how many amps you can run through a particular gauge wire and for more details on selecting the proper gauge wiring click here..

## What is a shared neutral?

A shared neutral is a connection in which a plurality of circuits use the same neutral connection. This is also known as a common neutral, and the circuits and neutral together are sometimes referred to as an Edison circuit.

## What happens if neutral touches ground?

The neutral is always referenced to ground at one, and ONLY one, point. If you touch the neutral to ground anywhere else, you will create the aforementioned ground loop because the grounding system and the nuetral conductor are now wired in parallel, so they now carry equal magnitudes of current.

## Can you connect a hot wire to a neutral wire?

You can have multiple separate loads between the hot and the neutral. Each of them is connected to the hot side and the neutral side. When no device is working (drawing power), no current flows. There is never a direct connection between the hot and the neutral wires.

## Can 2 120v circuits share a neutral?

Hi, in residential with a single phase service you are permitted to share a neutral with two 120V circuits. The two circuits can be near each other (even in the same box) or far apart. There is no stipulation as to how close or far apart the two circuits sharing the neutral can be.

## Can branch circuits share a neutral?

A multiwire branch circuit is a branch circuit with a shared neutral. This means there are two or more ungrounded (hot) phase or system conductors with a voltage between them and a shared neutral.

## Does the neutral wire carry voltage?

Role of the Neutral Conductor in Electric Circuits Although voltage is carried by the live conductor, a neutral conductor is required for two important functions: Serving as a zero-voltage reference point. Providing a return path for the current supplied through the live conductor.

## What is the purpose of neutral wire?

Neutral wire carries the circuit back to the original power source. More specifically, neutral wire brings the circuit to a ground or busbar usually connected at the electrical panel. This gives currents circulation through your electrical system, which allows electricity to be fully utilized.

## Can two separate circuits be in the same junction box?

2 Answers. The answer is yes you can have 2 separate circuits in the same box (they can have a splice also but not needed in your case). The only concern would be the total box fill.

## How many circuits can a neutral share?

You can only have one neutral per circuit in a single phase system, it is a current carrying conductor. If you use one neutral with two circuits you can exceed the capacity of the conductor and damage the conductor.

## Can two neutral wires touch?

No they cannot. The NEC clearly states that each neutral must terminate by itself in the lug. In a service panel they can share the same bus. No, but t can share the same buss.

## What happens if neutral is not grounded?

If the grounded (neutral) service conductor is opened or not provided at all, objectionable neutral current will flow on metal parts of the electrical system and dangerous voltage will be present on the metal parts providing the potential for electric shock.

## How do you connect 4 wires to 2 wires?

The first option is to use the black wire of the 12-3 cable as the hot wire. Connect the black wires of both cables together, and connect the common white wires together. Cap the red wire and leave it untouched in the junction box. Place plastic twist caps on all splices.

## Can you get a shock off the neutral wire?

No. By definition a neutral wire is a wire that is grounded to 0V. It does carry the current from the circuit back to the transformer however. If a system is wired correctly the neutral wire will never give you a shock.

## Can you use 2 wires 3 wires?

You would never attach a three wire conductor to a tandem breaker, as both circuits in the breaker would actually be coming from the same phase, for instance. Other than that, yes – if you want to ‘pigtail’ to add additional receptacles you should be fine, and they can share the same neutral (white) wire.

## Can I use the neutral wire from another circuit?

No, you can’t steal a neutral wire from another circuit. Each neutral wire is the return for the corresponding hot. If you “steal” a neutral from another circuit you run the risk of overloading that neutral wire (overheat, fire risk).