D. This normally non-current carrying conductor is also bonded to every exposed metallic part in . For part a, since the current and magnetic field are perpendicular in this problem, we can simplify the formula to give us the magnitude and find the direction through the RHR-1. Insulator D. 15(B)(3)(a) [Sec. Apr 19, 2008 · 1) "On a 4-wire, 3-phase wye circuit where the major portion of the load consists of nonlinear loads, harmonic currents are present in the neutral conductor; the neutral shall therefore be considered a current-carrying conductor. Staying neutral. the magnetic field from the current carrying conductor induces a current in the metal sheath or concentric neutral wires when the sheath is grounded at both ends of the cable. Jun 13, 2017 · I'm asking whether the neutral conductors between the transformer and service entrance switchboard are current carrying conductors for deciding whether the conductors should be derated. 12 Charging by induction. These factors help determine if you should consider the neutral conductor to be a current-carrying conductor for ampacity adjustment [310. Jul 26, 2020 · This video discusses which conductors must be counted as current-carrying and gives examples of when that matters. Touching this wire is not recommended, as there is actually current flowing through it. This means that if someone were to touch or ground out the neutral wire, they stand a good chance of being shocked with a substantial amount of voltage. I like the term neutral. The 2014 Code was clear when it came to sizing the neutral conductor in a raceway, but it was dead silent when it came to sizing the neutral conductor in a cable assembly. Because this is a three-phase, 4-wire, wye-connected system and the loads are nonlinear, the neutral must be counted as a current-carrying conductor. It is normaly tied to ground. Thus it's OK to assume only two of three conductors is carrying the full load. The ground wire is a normally non-current carrying conductor, designed to carry the electrical energy should a fault occur. Voltage is carried by the live conductor, but a neutral conductor is also necessary for two important functions: Serving as a zero voltage reference point. With one circuit de-energized, there are still only three current-carrying conductors, and there is no adjustment factor for three current-carrying conductors. To be electrically neutral is to have the same number of protons and electrons. But you are asking about something else. (a) Two uncharged or neutral metal spheres are in contact with each other but insulated from the rest of the world. 310. 2. , The ampacity of six current-carrying 4/0 XHHW aluminum conductors installed in a ground floor slab (wet location) is _____. The three current-carrying conductors and the neutral are in a raceway. 15(B)(4) describes the only case I know where you are allowed to not count the neutral conductor as a current carrying conductor. So the experimenter can make the wire have no charge and no current, or charge but no current, or current but no charge, or both current and charge. Aug 11, 2009 · in the code book under emt conduit fill for #12 thhn,thwn it is allowed 16 number 12,but it also says that more than three current carrying conductors in raceway or cable,you must derate and apply adjustment factors so 4-6=80% 7-9=70% 10-20=50% it also says that a 12thwn at 75 degrees Under which, if any, of the following conditions is the neutral NOT to be counted as a current-carrying conductor? 1-When it is only carrying the unbalanced current of a single phase system. Take a 3 wire circuit. To a Developer or Owner: A neutral means 4 wires instead of 3, AKA increased cost! Jun 9, 2020 · Select the correct statement (s) A. (d) Each current-carrying conductor of a Jul 8, 2024 · The neutral conductor that carries only the unbalanced current from a 3-wire 120/240v circuit or 4-wire, 120/208v three-phase wye circuit, is considered a current-carrying conductor for the purpose of applying the adjustment factors of Table 310. 15(B)(3)(a)). The source voltage is 208/120-volt, three-phase. 15 (B) (5) (a) and not count the neutrals. 37 (a) Compasses placed near a long straight current-carrying wire indicate that field lines form circular loops centered on the wire. It serves as a balance for the current flowing in the circuit. 16. 15(B)(5)(a) also applies to single-phase systems. Mar 16, 2020 · The determination of the cross-section of the conductors is based on knowledge of the maximum current-carrying capacity of the wiring system, which is itself determined based on the conductors and their operating conditions. electrons in current carrying wire. If these are all two-wire circuits (hot and neutral), the number of current carrying conductors in the EMT is 12 and these wires must be derated to 50 percent of their ampacity shown in Table 310. Dec 31, 2011 · The question of the frame of reference, in which the current-carrying wire is neutral, has been the subject of debate in the past years [2] - [10]. Dec 1, 1985 · A current‐carrying conductor is often used as an example to illustrate the transformation laws of the electric and magnetic fields. 15(B)(3)(a) adjustment factor for four current-carrying conductors is 80 percent (see Figure 3). Oct 12, 2019 · 310. It should help. The transformer secondary is 480VAC Wye. The neutral conductor of a: Jul 18, 2009 · For a three wire single phase circuit plus a ground it would still count as two because the neutral is carrying unbalanced current. This may help: Neutral Conductors: Here's some examples of when to count and not count the neutral as a current carrying conductor or CCC: 3Ø- 208Y/120 or 480Y/277 volt system-different circuit types: A) 2 wire circuit w/ 1 ungrounded, 1 neutral Mar 1, 2007 · So therefore, no, the grounded current carrying conductor is not a neutral. The ambient temperature is 30° C A neutral conductor is a current-carrying conductor that is connected to loads through fuses, circuit breakers, and switches. (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected Jan 23, 2013 · (5) Neutral Conductor. 2 × 41740 = 133,568 cm Insert that value back into Table 8 and arrive at the adjusted minimum-size equipment grounding conductor What is a device used to protect circuits from an overload of current? A. Unbalance current produces increased neutral-ground voltage and neutral current in the neutral conductor. 15(B)(5) which says that "A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310. 800 ÷ 250 = 3. A two wire secondary does not have a neutral but in industry one leg is usualy tied to ground and then refered to as X2, I think the term neutral came from there being no difference in potential between this conductor and earth/ground. But if the three wire circuit is derived from a four wire three phase system then it would count as three because the neutral in this case is current carrying. In three phase four wire distribution system severe unbalance occur due to unbalance grouping of single-phase loads, unequal line impedance, neutral conductor impedance etc. May 16, 2006 · Section 215. Neutral conductors shall be considered current carrying in accordance with any of the following: “(1) A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310. Grounded Conductor. , The neutral conductors of a 4-wire, 3-phase wye circuit, where most of the Each current-carrying conductor of a paralleled set of conductors shall be counted as a current-carrying conductor for the purpose of applying the adjustment factors of 310. Oct 21, 2011 · There are a couple of cases when the neutral is considered to be current carrying. 24 in. ” The magnetic force on a current-carrying wire in a magnetic field is given by F = Il ×B . If the conductor is charged positively, charged negatively, or neutral if. Study with Quizlet and memorize flashcards containing terms like Where six current-carrying conductors are run in the same conduit or cable, the ampacity of each conductor shall be lowered to _____ percent of its ampacity. 102(C)(1), whether the installation is a raceway or a cable. For a raceway containing 30 current carrying conductors, the ampacity of each conductor shall be reduced to ___ percent of that for a single conductor. D. Voltage, on the other hand, represents the electrical potential difference between two points in a circuit, and it is measured in volts (V). As this conductor is bonded to earth If the load is so unbalanced that the neutral is carrying full current, then other conductors are carrying less current. The following factors help determine if the neutral conductor is considered a current-carrying conductor for the conductor ampacity adjustment of Sec. Perhaps this is why over the years we have seen different terms for the neutral such as Common Conductor or Return Conductor. 24(C) and 250. 2]. The neutral wire is a return path for any circuit. ∴ Magnetic field − → (V) can exerts force on the moving charge i. One additional note, a 240 volt 1-phase supply consists of 2 line conductors. As per this system, one of the two current-carrying conductors is required to be grounded. If a conductor is electrically neutral, then. I was hoping that the definitions in Article 100 would let us say that a 2 wire circuit does not have a neutral conductor, but a neutral conductor is defined as a circuit conductor that is connected to the source neutral point. Aug 10, 2009 · (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system, a common conductor carries approximately the same current as the line-to-neutral load currents of the other conductors and shall be counted when applying the provisions of 310. This neutral would not be counted as a current carrying conductor, unless the circuits have a major portion of the load Study with Quizlet and memorize flashcards containing terms like The equipment grounding conductor is considered to be a current-carrying conductor according to the provisions of Table 310. This grounded conductor is called the “Neutral / Cold / Return”. to protect the conductor. Intentional connection to earth ground of all noncurrent-carrying metal parts (Equipment Grounding) Instrumentation Shielding. False Phase unbalance causes three-phase motors to operate at temperatures ? and, therefore, the motor cannot deliver its rated horsepower. 4, they must be protected by a 15A fuse or circuit breaker. The switchboard is the service Jun 13, 2022 · Yes, the neutral wire carries current. (Neutral Connection) 2. when the ground is removed from the sheath at one end to reduce heating in In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, three-phase, wye-connected system, the common conductor is not a current-carrying conductor and not subject to the adjustment provisions of 310. 15(B)(3)(a) [310. And according to 240. In normal use, it will carry the same amount of current as the ungrounded (hot) conductor. b. 15 (C) (1)). The angle θ is 90 degrees, which means sinθ = 1. In North America, the neutral is color-coded white or gray for easy identification (see image below). Personally, I would only use that if I had to. ” Secondly, Article 250. The conductor is then grounded while the ball is kept close. Relativity is not relevant to that at all. average kinetic energy of electron decreases ( Neglected heating effect of electric current) Role of the Neutral Conductor in Electric Circuits. So therefore, no, the grounded current carrying conductors are not neutrals. Figure 22. all of the above) a. Fuse ** B. It’s now clear that the service neutral conductor must be sized per 250. 4 is for a 120/240-volt, single-phase system where three wires do the work of four, the two ungrounded conductors sharing a single neutral. If you are not sure, don't. If you believe that you have a valid exception then follow it. Jul 21, 2021 · Learn how to determine the current carrying capacity of conductors according to NFPA standards and codes. The conductor is generally assumed to be neutral in the rest frame of the lattice of positive ions, in which frame the free‐electrons have a drift velocity v. True. Intentional connection of a current-carrying conductor to earth ground. The neutral wire completes the electrical circuit and is an automatic return path for the hot wire. 10. a. , Control circuits are considered to be current-carrying conductors according to the provisions of Table 310. 1. The only way the neutral is at max current is if one of the hots is carrying no current. (a) neutral (b) ungrounded (c) grounding (d) none of these Feb 7, 2019 · 310. Since the equipment ground does not count, there are four current-carrying conductors. (b) A positively charged glass rod is brought near the sphere on the left, attracting negative charge and leaving the other sphere positively charged. 5) = 15. Grounded (neutral) The grounded (neutral) conductor is a current carrying conductor, and is used to complete the circuit back to the source. 1. 15(b)(2)(a). Section 310. Standard IEC 60364-5-52 determines the current values according to the basic operating principles for installations and May 17, 2024 · But clearly 310. A ____ conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310. 45 A 175-Amp breaker protects a feeder that originates in a 120/240-volt, 1-ph, 3-wire service panel in a residence. (d. 15 (B)(3)(a). In a current carrying conductor, it is possible, all the free electrons can have same drft velocity. If one circuit is de-energized in Figure 3’s example, the neutral conductor will become a current-carrying conductor. May 30, 2023 · Current refers to the flow of electric charge, typically carried by electrons, through a conductor. (a) A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 310. Jun 10, 2013 · Each current-carrying con- ductor of a paralleled set of conductors shall be counted as a current-carrying conductor. (b) Right hand rule 2 states that, if the right hand thumb points in the direction of the current, the fingers curl in the direction of the field. Section 3 The 120v circuits do not have all ungrounded hot conductors of the system present in the wireways in question. shall not carry a continuous load What size THW copper conductors are required to carry a 85-ampere load of a feeder supplying a lighting panel? The lights that are connected from this three-phase panel are nonlinear loads. The question that was given to me is that if you have 6 two wire circuits each with it's own neutral in the same conduit, can he use 310. 15 (B) (6)] Neutral wires (“neutral conductors”) may or may not be counted as current-carrying conductors, depending on the situation. An unbalance in load conditions increases the neutral conductor Counting the neutral Section 310. In normal operating conditions, the grounded (neutral) conductor carries only the maximum unbalanced return Dec 29, 2020 · (5) Neutral Conductor. May 19, 2010 · The neutral will always be a current carrying conductor as its purpose is to carry the unbalanced current from the ungrounded conductors. Current and voltage are closely related: the flow of current occurs due to Jun 30, 2020 · Equipment Grounding Conductor (EGC) – A conductive path that is part of an effective ground-fault current path and connects normally non-current-carrying metal parts of equipment together and to the system grounded conductor (service neutral conductor) or to the grounding electrode conductor, or both. According to 310. Article 310 Section 310. 15(B)(2)(a). " 2) Where the number of current-carrying conductors in a raceway or cable exceeds three, or where single conductors Jun 29, 2024 · The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®. This fact alone means that the terminology for such a hazardous conductor should not be mixed up with the safe ones, ever. what can be done to reduce the current flow? unground it at one end. Cheers, Wayne Nov 3, 2010 · My opinion is that you always count a neutral as a current carrying conductor. If there are 30 amps of current entering into an electrical circuit, the neutral wire must Jun 20, 2017 · The system source does not have to be a neutral being used as a current-carrying conductor as outlined in Article 250. But for the purpose of ampacity adjustments for more than 3 current carrying conductors a neutral that only carries the unbalanced current of a multiwire circuit are not required to be counted as CCC's. Here's some examples of when to count and not count the neutral as a current carrying conductor or CCC: by Infinity 3Ø- 208Y/120 or 480Y/277 volt system-different circuit types: A conductor carrying electric current contains same number of positive and negative charges and thus conductor is electrically neutral. Main and system bonding When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying conductor TRUE An intentionally grounded circuit conductor commonly referred to as the neutral Oct 25, 2007 · The neutral conductor of a 4-wire 3-phase circuit is considered a current-carrying conductor where the major portion of the neutral load consists of nonlinear loads. 3/0 Divide the required size into the adjusted size to establish a multiplier. If those are used, the neutral is not necessary for a similar reason as the 3-phase explained next. , Feeder grounded conductors that are not Jun 21, 2017 · If there are any line to neutral loads the neutral is by definition a current carrying conductor. There are multiple sets of secondary conductors. This article will provide a deep dive into neutral conductor principles. (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system, a common conductor carries approximately the same current as the line-to-neutral load currents of the other conductors and shall be counted when applying the provisions of 310. The Table 310. For example, if I have 3 phases, a neutral, and a ground conductor in a conduit, do I need to derate the conductor ampacity by 80%? Mar 4, 2015 · Rob, I saw similar information from MH (EC&M Oct 2011) but he stated [highlight]"The neutral conductor of a 4-wire, 3-phase, 120/208V or 277/480V wye-connected system is considered a current-carrying conductor for conductor ampacity adjustment of 310. David We would like to show you a description here but the site won’t allow us. In a very clearly specified set of circumstances (all involving Nov 3, 2015 · A side note: as we are aware, Tables 2 and 4 are intended to be used only for up to 3 conductors in a raceway or for a multi-conductor cable containing 2 or 3 current carrying conductors [not including a neutral conductor, as neutral conductor is not considered to be a current carrying conductor under provisions of Subrule (3), and this aspect An equipment grounding conductor shall be run with the phase conductors of a single-point grounded neutral system and ? . To an Engineer: A "neutral" is a current-carrying conductor that carries the unbalanced current in 3 phase systems, and is intentionally connected to the ground. [NEC Article 310. The complicating issue here is the neutral, which is normally the grounded conductor. Sep 3, 2008 · The neutral is the wire going back to the center tap of a transformer. In current carrying wire, net charge is zero because of equal number of electrons and protons present in the wire, but only electrons are moving. Feb 28, 2021 · In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system, a common conductor carries approximately the same current as the line-to-neutral load currents of the other4–6 807–9 7010–20 5021–30 4531–40 4041 and above 351Number of conductors is the total number of Mar 18, 2013 · Select a feeder conductor with sufficient ampacity to carry your calculated load [215. 122. Feb 23, 2007 · A multi-wire branch circuit that incorporates 3 ungrounded condcutors sharing a common grounded conductor in a 3 phase 4 wire system, would have a neutral that carrys only the unbalanced current from the 3 phase conductors. That number can be zero (empty space is electrically neutral) or very, very large (even a small wire has around a billion trillion protons and electrons). When circuits are properly balanced, the neutral carries very little current. In a 3-wire circuit consisting of two phase wires and the neutral of a 4-wire, 3-phase, wye-connected system, a common Which of the following is a correct statement about current carrying conductor? On increasing temperature drift speed of free electron increases; On increasing temperature drifts speed of free electron decreases; On increasing P. Jul 16, 2013 · Rule 4-004(4) When a load is connected between a single-phase conductor and the neutral, or between each of two phase conductors and the neutral, of a three-phase, 4-wire system, the common conductor carries a current comparable to that in the phase conductors and shall be counted in determining the ampacities as provided for in Subrules (1 The National Electrical Code (NEC) requires the use of a “grounded electrical distri-bution system” for a permanently connected AC power source. (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected Nov 1, 2019 · By increasing the voltage difference across the wire we can take advantage of the resistance to control the current through the wire. 15(B)(3)(a) if more than 50% of the neutral load consists of nonlinear loads [310. Where conductors of different systems, as provided in 300. (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected Nov 1, 2023 · Neutral wire does carry current as it provides a return path for electric current and a reference point for circuit voltages. Mar 8, 2013 · A common application of multiwire branch circuits as described in section 210. However, in “Counting the Neutrals,” (ELECTRICAL CONTRACTOR, November 2012), they are calling for three hots, three neutrals and one ground. When discussing current in the grounded conductor that supplies a service, there are two types of currents to consider. 15 (B) (3) (a) shall apply only to the number of power and lighting conductors Figure 5. Jul 12, 2024 · In a live circuit, a neutral wire is always carrying electrical current unless a switch controls it. It is measured in amperes (A). Hence, option (b) is correct answer. The definition establishes that any conductor connected to a neutral point of an electrical system is intended to carry current under normal conditions. Not all current carrying conductors are "current carrying conductors which are counted for ampacity adjustments". This is because harmonic currents will be present in the neutral conductor, even if the loads on each of the 3 phases are balanced. 15(B)(5)]. 15(B)(3)(a)" (adjustments for total Dec 11, 2014 · Ground wires (“grounding conductors”) are not counted as current-carrying conductors. 2- When it is the neutral of a 3 phase, wye connected system where the major portion of the load consists of nonlinear loads Then, the load is connected from the load back to the battery, on its positive terminal, by a neutral wire whose function is to return the electric current from the load to the source, meaning that, indeed, neutral wires must be conductors for current to be able to easily return to the battery so that the circuit can continue operating. may be bare or insulated b. Neutral wire A current-carrying conductor under electrical pressure is a/an: (4) Neutral Conductor. And the EGC never is. Here is something written by our member Infinity. Conductor adjustment factors shall not apply to conductors in raceways having a length not exceeding _____ in. 20 (B) (2) and does not meet other provisions of Part 20. We’ll examine why and how current flows through neutrals, guidelines, and the safe handling of neutral wires. Member. To visualize how the neutral conductor works, consider that electric power is delivered as current across a voltage difference. 4 Wire, 3 phases plus neutral. 3, are installed in a common raceway or cable, the adjustment factors shown in Table 310. Hot wire C. EGCs are never counted as current carrying conductors. Mar 21, 2021 · Because of the structure of 1-phase power like you find in normal outlets and lighting circuits, there will always be equal current in the line and neutral wires. 3. B. ungrounded When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying conductor. A useful guide for electrical professionals and engineers. 15(B)(3)(a). NEC indicates that “on a 4-wire, 3-phase wye circuit, where the major portion of the load consists of nonlinear loads, harmonic currents are present in the neutral conductor; the neutral shall therefore be considered a current carrying conductor. Assertion A conductor carrying electric current becomes electrically charged. If you could get the raceway down to 24" then derating wouldn't apply. Aug 9, 2023 · In most cases a neutral for a multiwire branch circuit will not be a current carrying conductor. (b) In a 3-wire circuit consisting of two phase conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected Study with Quizlet and memorize flashcards containing terms like a multiwire circuit is a circuit consisting of two or more ungrounded conductors (hot wires) that have a voltage between them, and an equal voltage between each, according to the IEEE dictionary, a neutral conductor has the same equal potential between it and all ungrounded conductors of a ---- system, a 2-wire, 120V circuit Sep 16, 2016 · My question is since this neutral conductor is only used for voltage and phase detection can I also apply 310. Some authors suggest that a neutral wire (c) On a 4-wire, 3-phase wye circuit where the major portion (over 50 per cent) of the load consists of nonlinear loads such as electric discharge lighting and computer loads, harmonic currents are present in the neutral conductor and the neutral shall be considered a current carrying conductor. A positively charged ball is brought close to an electrically neutral isolated conductor. 15(B)(5), these include: The neutral conductor of a 3-wire circuit from a 4-wire, 3-phase, 120/208V or 277/480V wye-connected system is considered a current-carrying conductor for conductor ampacity adjustment of 310. Apr 20, 2015 · • There are four or more current-carrying conductors bundled together per the factors contained in Table 310. Also an intentional connection to earth ground. Think of a wire as a huge number of protons that are milling about slowly and randomly, with an equally huge Apr 28, 2020 · The inspector is correct. 2 (A) (1) requires feeder grounded conductors to be at least the minimum size specified in 250. Intentionally grounded. The adjusted ampacity for each conductor is (30 x 0. According to the National Electrical Code, the neutral wire is the “grounded conductor. 15 (B) (3) talkes about adjustment factors for more than 3 current carrying conductors in a raceway or cable. Neutral conductors are normally-current-carrying and can kill you as easily as any phase wire. Jun 18, 2019 · All phase conductors are considered current-carrying. 15(B)(5) Neutral Conductor. e,. Jul 1, 2021 · Answer to question # 3: System bonding jumper — a conductor that interconnects the system grounded point with the non-current carrying metal enclosure of the source and interconnects the neutral conductor coming from the source to the service equipment with the non-current carrying metal enclosure of the service equipment. Customer: Is ground or neutral considered a current carrying conductor when considering conduit fill derate (NEC 2014 table 310. The neutral conductor is isolated from accidental contact because it is a very dangerous normally current carrying conductor. C. 15(B)(5)]: • Both the neutral and ungrounded conductors of a 2-wire circuit carry current. 15(B)(5)(b)]. 30, Grounding Separately Derived Alternating-Current Systems, must be considered. 2 Multiply the cm area (from Table 8) of the required EGC (4 AWG copper in this case) by the multiplier and arrive at the minimum cm area as adjusted proportionately. In a current carrying conductor, the speed of the all the free electrons need not be same. A neutral conductor that carries only the unbalanced current from other conductors of the same circuit shall not be required to be counted when applying the provisions of 3. 15(C)(1). 15(B)(5)(a) does not intend to exclude the neutral conductor of a 2 wire circuit. . Circuits that supply nonlinear loads (such as certain kinds of lighting, like fluorescent) must Sep 1, 2000 · The Code considers the neutral conductor a current-carrying conductor only when it carries the unbalanced current from other ungrounded phase conductors. 15(B)(5)(c Sep 1, 2005 · For four to six current-carrying conductors, the conductors are de-rated to 80% of their values. In a 20 amp multiwire branch circuit if the two ungrounded conductors each carry 15 amps, some people think the neutral carries 30 amps, or the combined total of the current on Sep 15, 2021 · You do not count it when the neutral is part of a full MWBC and carries only the unbalanced current from the hot conductors. The rationale is that whenever there is neutral current, one or more of the phase currents has been reduced in proportion, leaving the heat dissipation the same. Any time the majority of the load on a feeder is nonlinear, you must treat your neutral as a current-carrying conductor. Any electricians who find themselves connected to a neutral conductor carrying the imbalanced current of the circuit will certainly verify that the neutral is a current-carrying conductor. shall have sufficient ampacity for fault-current duty c. ” Sep 26, 2021 · 2. A current carrying conductor is electrically neutral. 15(B)(5)(b) discusses two-phase conductors and a neutral, and it requires counting the neutral as a current-carrying conductor. rn if oq kn iv dw rp ao tp qp