Another related question: Is there a reliable way to test if a neutral wire is shared by more than one circuit? ... Best example is your service neutral in a residential system. It is my understanding that any time two 110V circuits share a common neutral, the circuits should be treated as a 220V circuit (double pole breaker). ... Best example is your service neutral in a residential system. At work we are having a debate on sharing neutrals . Electrical shared neutral An electric shared neutral is the white or negative wire that is shared between two electrical circuits on a basic single phase system. Multiwire branch circuits "share neutrals" as does any residential service and any ... approved wiring method as ... led one to believe that he shared a neutral. shared neutral with a two-pole shared neutral AFCI or conventional wiring with two single-pole AFCI circuit breakers. Electrical Wiring. Multiple wire branch circuit (shared neutral) User Name: Remember Me? Is this a "Shared neutral" situation? In a 3-phase system it is legal in some jurisdictions to share a single neutral wire between all three (3) phases. 07603009 Some situations where shared neutrals may be used: ... and more than $868 million in residential property loss. Open Main Wire -- Strange Effects. 1, ... 2 Independent trip refers to 2-pole shared neutral circuits ... arcs in residential wiring are associated ... to the residential panel. We know this based on the typical net prices of AFCI circui t breakers and NM-B cable. In your case both the fan and the light are on the same circuit. Arc Fault Detection: Your Questions Answered. Most electrical devices use 120 volts and require a "hot" wire and a neutral wire to operate. This is also known as a common neutral, and the circuits and neutral together are sometimes referred to as an Edison circuit. Residential Wiring Guide ... of two live conductors and one neutral conductor. Explanation of Shared Neutral Electrical Circuit Wiring Requirements Double pole breakers can be required by National Electrical Code for split receptacles, as per paragraph 210-4-b. Open Main Wire -- Strange Effects. This wiring configuration is confusing. There are three circuits entering the box, but it appears that two circuits are sharing a single neutral. For the effects of an open neutral on two circuits that share their neutral, go to Shared neutral. But when I take into account the residential work, ... "Having a shared neutral with two circuits is a fairly common practice. Arc Fault Circuit Interrupters Frequently Asked Questions ... grounded or shared neutral? I was told you could just tie them together with a piece of wire. At work we are having a debate on sharing neutrals . It involves two hot wires sharing one neutral as their "return" path. I see the point of double pole breaker for shared neutral circuits but the last comment ... 2 circuits sharing neutral". Unintentional shared neutral - is it a problem? This sort of arrangement saves a little wire and labor at installation time by using a cable containing black, red, and white wires between the panel and (usually just) the first outlet or Thus, any possible savings are found only in labor costs. Residential ... see Correcting outlets. Shop for Wiring Devices, shared neutral arc-fault from Platt Electric Supply shared neutral in residential wiring moreover shared neutral nec additionally shared neutral problems including shared neutral gfci also with sharing neutral wire 3 phase together with shared neutral code additionally how many circuits can share a neutral moreover sharing neutral on 2-circuits moreover (Residential wiring) I recently came across a questionable wiring issue on a project. For the effects of an open neutral on two circuits that share their neutral, go to Shared neutral. A shared neutral is a connection in which a plurality of circuits use the same neutral connection. Shared neutrals in the normal context are still acceptable but are becoming increasingly unpractical in residential wiring as more stringent AFCI requirements are put in place. ... see Correcting outlets. Shop for Wiring Devices, shared neutral arc-fault from Platt Electric Supply Shared neutrals as most speak about them is when you are using a neutral for 2 different circuits. I'm finally implementing the advice given in this question, I've managed to run the wiring up to the junction box, but I'm a bit confused by the contents of that box. The hot wires are 240 volts apart from each other and each is 120 volts from the neutral. Thus, the two 12/2 share a neutral. It is a single shared neutral Most of the electrical wiring is ... > How to break up a circuit with a shared neutral? Using a double-pole breaker assures that the two legs of the circuit will be forced (in most panels) to opposite legs of the 240-volt panel - a requirement Articles about shared neutral ... April 30, 2011 by Dave Rongey. Arc Fault Circuit Interrupter (AFCI) FIRE-GUARD Vol. Residential Wiring Guide ... of two live conductors and one neutral conductor.